February 1984
An independent magazine published by ECC Publications
Issue No 23
WIN A ROBOT
in our iiggest-ever compet.t.on
ZX-81
OUTWARD
BOUND
Best-selling
Jungle
programmer
o-it-yourself
games
packages
Exclusive
ZX-81 kit
. offer-
save £££s
New Sinclair
Computer
Launched
With the vast range oi games DOW availabte tor home
computers each holds a different challenge. Now the
Kempstan Competition-Pro Joystick will come to your Cud and
improve your playing capabiLih'as Your movements will
become quicker your tinger poised over Ihe lire button r3l Ihe
meidy. your scores will be oui o( this world. Ploynej will be
easier
[f you're serious about the cballenge your computer
presents then you shouldn't be wilhaul the KempsSon
Competition- Pro Joystick.
Compatible with any Atari 4QLVBQ0. Vic- 2D- Commodore 64
Jovsttcic Compatible Software Jar the ZX Specirum
Now Available separately the Kempston Joystick
Interface lor the ZX Spectrum ONLY £14,99
Allows the use ol any Atcan/Commodore type Joystick with
the popular ZX Spectrum computer A must tor any Spectrum
owner who wants the power ot a joystick added io Ihe power
oi Ihe Spectrum. Simply plugs into the edge connector at the
back ol (he Spectrum No modifications necessary. Only £1499
Exclusive otter to mail order ■cuslomeis - a FREE
Conversion Tape ol your choice (value £4 95) H you order
either the Spectrum Joystick or Spectrum [nlertace
Limned offer so order MOW!
Ir you have the hardware you 13 want the software
LATEST RELEASE FROM KEMPSOFT
ftyTTQ^rOKT K^ADC; Kescue ihe marttars iron their crumMing
MILIUM IVLHIO p]afiBt aua n^Hport 1hfim ihftjugh ihe y
«K Spectrum Only M &S meteor bell to safety in the mother ship
Aquaplane f.48X.i
:■' -'■
'
Aquarius
■
Hfe .•■'- , !i not
B -",
AimBQB&kjTl
bms
an
tan hi"!' "
£49*
■
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Ate Aloe f*Mtl
SMC
RWM il
a so
Blind Alley
£405
Mi
£S »
3.3ZV BOG
£S«S
Purthy;«Ki
,/,*i:
CooJoe
sua
Psputao;
B&«
Combat Zone
£5Ct
Pmaia{4«K)
S4«
Comdarsof Genon IASK'i
eb«
Refeota
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CoftBfc CilBTllla
Cosmos
9S«
BrJMpuM*
I.: r " it-
57 94
Crazy Qadr(4BK)
£o<W
SHCJWvSd
SV»
Cyber Rats
S9 .-
;':'-i-.;..-|.
ES50
rrx
EG -".
■ ahdfld. Break Oul
14 90
Fragw
Frogfiun.
BUG
Spookymori
EB SO
COS
GaJacttc Abductor
B7S0
Terror DoktiML
lSe9S
Galactic Trooper
B w
Tlmo Cede ;«K,
iSaianiins
U«
Tnmsverson
H.9Q
■■ : ' ■
WW
Tram Am
K.5G
Kulpman
ues
Violent Universe
fe«
Hansquin
E6DU
Mr Wimpy i48K)
fevfl
JelPcK
feao
■AftziaraWijmfjri-fWi
H«5
Knot in lb .;■;--
fe«
Zip iiip i 4!K
53 50
Kong ( 4fcK ;.
09 »
S550
XrazyKong
£a%
3DMawctCctd
S5Vf
Lunar Alma:: ( 46K i
asti
3C MCrtSftf N|qt*
£595
Manic Miner i flaK':
E5«
3DRqttf*f
E595
M-jzerrym
QvS
l&SpaevWan
es k
Al' ,*-,»,„ ' - M ~ ' - ■ J -
_turl»i Hn4
«K)
esfls
AiljnnKHf ioK wtost rttuttwlse stated
All ihe aOove games, simply toad and play wflh the Kempstan
range al Joysticks However, some games avaUabJe were-
produced before Joysticks Were avertable lor the ZX Speclrum WUl
the aid ot Kempston Conversiafi Tapes ttw» games can now be
ptayed wish ihe Kempekxi Joysticks.
Comrerajon Tape
- ConvBifc Hopace
-Goes Skang. Hungry
Horace. FUghl
Simulation (SLnclair)
Arcadia. PerwHralcff
■[■ ••'!:■■■,
Conv«ision tape □
-Converts Ofbifer
Eszape Tan*
-vonbpedc Spectra]
Invaders Cruising on
r3road\* r ay Frenzy
AIL £4°*.
Mas\ items tire available Irom
W H Smuh, Boots. Sp*clms!ri Compuler
CenliES and good computing shops or aB»Cl Irorrj
Hfimpsron
"^ MICRO" ELECTRONICS LTD
umi 3D Singer Way Woburn Road Industrial Ls»a(e
Kempslon. Bedtora. MK"J2 7AF TbI <0234> 656633
Tale*- 82oO;« KtMPMlG
Conversion Tope ID
-CanvertS Ah
E4ddum& Jumping
Jack, Molar Maul
AnflrcAdi Horace
And The Spaders.
Space Raiders
Winged Avenge r
Munrhet
TR."
ENQUIRtES
WELCOME
Contents
Incorporating Spectrum User
Editor
Bill Scolding
Deputy editor
Consultant editor
Mike Johnston
Managing production editor
Harold Mayw MBE
Software editor
■■■i;rc
Program reviewer
Rtbecea Ferguson
Illustrator/designer
Rrian Kinc
Crroup advertisement manager
lobe Ross
Sales executive
Annette Burrows
Production a$si$tjinl
Dezi Epaminondou
Editorial assistant
Colette McDermotl
Managing editor
Kigd Clark
Managing director
E OT\ Cart Wright
Chairman
trd Hease
Sinclair User is published monthly'
by ECC Publications [.id.
ABC
Telephone
All departments
01-359 3525
i would like to contribute to
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publications please -send programs*
articles or ideas for hardware
Sinclair User and Programs,
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Programs should be on cassette and
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-'..mptd-addressed envelope is
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We p a y i'iO for the copyright or
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' opyrighi WiU
Stodta I
ISSN No 0262-5498
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1 -607 64 1 1
Wt» j robot pogt 41 Knitting pattern fmge £?
5 SINCLAIRVOYANCE Once again we look into our crystal ball.
1 1 SINCLAIR USER CLUB Make the most of the latest Club special often.
17 NEWS The new business machine from Sinclair Research, and software piracy arc m the
limelight i his month.
19 SINCLAIR SIMON Our hero runs into trouble,
jib LETTERS Selected lips and opinions from our postbag.
33 HARDWARE WORLD An American printer, clip-on joysticks and olhcr reviews,
41 ROBOT COMPETITION Your chance to win a robot and many other great prizes in the
first parr of our challenging coniest,
44 DIY SOFTWARE John tiiibert r s round-up looks at games designer packages,
49 SOFTWARE SCENE Five pages of reviews for the ZX-81 and Spectrum,
58 USER OF THE MONTH Canoeing enthusiast Keith RatclirTe brings a breath offrtth air
to his ZX-81.
63 KNITTING PATTERN Let your ZX-S1 help you knit a woolly hat.
69 PROGRAM PRINTOUT The best of our readers' pmgrprm in a special pull-out section
90 MACHINE CODE John Kerrigan introduces some more machine code routines.
98 HrT SQUAD In the second or our series on top programmers, Nicole Segrt talks to ihc
author of Jungle Trouble.
103 STARTER PACK A regular feature for beginners.
109 MICRO-PROLOG John Gilbert looks at a new language from Sinclair Research.
111. FORTH This month we explain some simple input routines.
118 EDUCATION Theodora Wood assesses reading programs Tor young children.
126 HELPLINE More expert answers to your queries from Andrew Hewson.
135 MIND GAMES Quentin Heath delves into the depths of Valhalla in his mood-tip od
animated adventure*.
141 SOFTWARE DIRECTORY A comprehensive list of currently available cassettes.
PLUS: CENTRE PAGES Sinclair Business User, our special business software inert.
NEXT MONTH
We bring you the second part of our great robot
competition and oiler a mammoth free software
review insert.
SINCLAIR USER fiebm&y 1984
A NEW DIMENSION IN EXCITEMENT FROM VORTEX SOFTWARE.
Stop the advance of tfoe Millitoids. Survive the jr.
of death, rationalise die paradox zone and overcome
(fee dangers encountered in the flatlands.
Achieve this and return to the
transporter capsule before the deadline
Rut beware. There are lethal tioverdrokb,
Bouncers and land mines everywhere
3D full colour graphic effecs machine
code fast action and mulU-screen
wraparound iiones make Android Two ;i
mind blowing L mtion game.
SEEK OUT ANDROID TWO AT
ALL THE BEST DEALERS.
PLEASE BUSH Mfi
SPECTRUM 48K
KEYBOARD/JOYSTICK OPTION
ANDROID TWO(S) £5-95 EACH
TOTAL VALUE
Enclose FO/cheque payable to VORTEX SOETWAKIL
/(■SOFTWARE^
name:
addres
Send to mall ptJot jdJiess;
VORTEX SOFTWARE 280BROOK.LAHDSKOAI) MANCHESTER M2 3 WD
DEALER ENQUIRIES WELCOME -
Vortex are always seeking exciting new programs. Contact us or send sample
Sinclairvoyance
Cassettes and bugs
and rock and roll
WITH HIS LATEST ALBUM, The Bop Won't Stop, pop
idol Shakin 1 Stevens adds his name to those other rock stars
whose records carry additional computer program tracks. Pete
Shelley, Chris Sievey and Mainframe are among those musi-
cians who have used the computer boom to improve record
sales* although so far that gimmick does not appear to have
had the desired affect.
Putting aside the rather dubious advantages of using hi-tech
to sell hard rock, the practice does serve to underline the
growing bond between the music scene and the software
scene, a bond which indicates the similarity between the two
industries.
Rock and roll has always preached the rags to riches myth
— the garage band which becomes an overnight sensation,
signing fat contracts and shooting straight to the top of the
charts with a bullet. The truth was somewhat different, and
bands often spent gruelling years on the road to success,
waiting for the big break which never came.
The software games industry, being relatively new^ can still
hold out the carrot of overnight success and untold wealth. It
is not so long ago, after all, that software publishing was itself
a cottage industry, and companies with household names
today were previously only to be found hidden among the
classified advertisements. Young up-and-coming programmers
arc still being discovered by talent-spotting publishers and the
contracts can involve ludicrous amounts of money.
The times they are a-changing, however, and it is becoming
as difficult to break into the software market as it is to get a
recording contract. Software houses are endeavouring to
promote the programmers as well as the programs, and
consequently would-be games writers must be exceptional to
be accepted. No longer anonymous boffins, those whizz-kids
might soon be elevated to the status of superstars, and punters
could be asking at their local micro shop for the latest game by
Mike Roman rather than the recent releases from the Martian
Software stable. We at Sinclair User have always emphasized
the human factor in computing, and our Hit Squad series
introduces the brains behind the best-selling games. Neither
books nor discs are sold on the strength of the publishers'
name but on that of the author or musician, and many believe
that software should be no different.
Instant success, Top Ten charts, lavish publicity and the
cult of personality — all those the games industry has in
common with the pop world, and it is worth remarking that it
is in those companies with experience in the music industry,
such as Virgin Games and K-Tel, where such factors are most
apparent. It could also be argued that software games have the
same transitory appeal as pop singles; this year's model
quickly becomes last year's thing. Zapping aliens and maze
man games will be golden oldies, played only by ageing micro
freaks. The kids will have moved on to something else.
Bootleg blues
ILLEGAL RECORDINGS — bootlegs — have long been the
bane of the record industry. Even before rock and roll arrived
jazz fans were paying high prices for illicit recordings of
Charlie Parker, Breaking almost every copyright law, bootlegs
have nevertheless continued to enjoy a healthy existence,
despite legislation and tighter security at studios and concerts,
and despite their often inferior quality and exo^ ; *"nT pri
Now, inevitably, bootlegging has come to ths. ^«mw.-. mau*-
try, and software houses across the land are up in arms and
preparing to man the barricades. Apparently colossal amounts
of money are being lost to the dastardly pirates, and some of
the smaller publishers have their backs to the wall, Whether
the pirates are members of the Dunzappin Computer Club or
Foster-swilling Antipodeans, the combined might of the soft-
ware publishers will give no quarter. The thought of all that
lost revenue has been too much to bear.
It is estemely unlikely, however, that they will succeed
where the long established record companies have failed, and
though they might be able to frighten a few schoolchildren,
overseas the organized pirates will probably continue to
flourish, at least until the software houses have the export
market sewn up.
In the meantime, the games industry is fighting to retain its
legitimate hold over its products, lobbying M.P.s and publi-
cising its cause. Technology might be introduced to prevent
copying, of course, though that has been attempted before by
record manufacturers. The truth is, that as long as cassette-
players can record as well as play back, copying will continue,
and perhaps the publishers and programmers of games which
have been pirated will think twice when they next record one
of their Barry Man i low albums for a friend. Illegal copying is
not, after all, confined to the software industry alone.
SINCLAIR USER February 1994
'he best
ccessor y for
your micro
ONLY
£34*49
The Rotronics Portable Case #J P+P £S - 5 ° 1 ,
Here is the ideal portable work
station for home, school or work.
Specially made for most home
microcomputers, it contains
yourZX81 or Spectrum within
a smart executive style case
with removable lid for convenience
in use.
The individually tailored foam
insert securely protects your
Spectrum Joystick
Interface
Revolutionary design allows
standard (9 pin) joystick lo be
used with sfly Spectrum
software. Easily programmed in
seconds - no links or cassette
software required £24 .45
SpectravKteo "Quickshot"
Joystick £9 45 (p + p 50p)
ZX Panda
The best 1 6K RAM for [be ZX81
Antt- wobble design with LED power indicator
1 6K EspandaWe RAM Pack £ 1 8 SO (p + p 50p ) .
16K Plug-in Module for above £13.95
(p + p50p).
3£K G<anl Panda including Module £31 .45
{ptp75p).
micro, printer, cassette recorder,
tapes and manuals during transit.
A scalpel is provided to modify the
insert for expansion units and an
alternative insert can be supplied
if you change your hardware in
the future. The case is also
available with uncut foam inserts.
All components remain fully oper-
ational within the case via inter
connections routed between the
double layers of foam, so there are
no unsightly leads.
This is the first case designed for
easy use with each component
positioned for convenient oper-
ation. The overall dimensions are
138mm x ?00mm x 363mm.
Order Form
Trade Enquiries Welcome
Please send me (tick appropriate box)
□ Rotronics Portable Case at £36.99 (inc. £2.50 p+p)
for ZX81 /Spectrum/Uncut Foam (please delete as necessary)
□ ZX Panda 16K RAM Pack at £1300 (inc. 50p p+p)
D ZX Panda 16K Plug-in Module at £14.45 (inc 50p p+p)
□ ZX 32K Giant Panda including Module at £32.20 (inc. 75p p+p}
D Spectrum Joystick Interface at £24,95 (inc. 50p p+p)
□ Spectra video ' 'Quickshot" Joystick at £9.95 (inc 50p p + p)
Ail prices inclusive of VAT
I enclose a cheque/PO for £ . made payable to SMT.
Name .
SMT
Address.
■
Please allow 28 days for delivery. Send to (no stamp required)
FREEPOST Greens Norton Towcester Northants NN12 SBR
310 STREATHAM HIGH ROAD, LONDON SW16 GHG
Tel: 01 -769 2887
Open Tubs -Sat 10.30 am to 5.30 pm I Closed Monday si
SOFTWARE FROM ALL THE BEST SUPPLIERS-
OVER THE COUNTER -PLUS GROWING RANGE
OF PERIPHERALS. SEE IT 'N TRY IT BEFORE YOU
BUY IT.
SAE appreciated for catalogue — but please specify
for which computer.
Ofc^ON zx . 81 2X SPECTRUM
THE WORLD'S GREATEST RANGE OF
SINCLAIR SOFTWARE
PIONEERS IN 1981 -WA Y AHEAD TOD A Y
BBC A C0B N ^°l ^olf^
NEW! -BUFFER CLUB for regular customers.
Spects f Offers — Lectures — Foreign Trips —
Software Promotions. Ask for details of member-
ship on your next visit.
MEMBER QF THE CDMPUTEfl TRADE ASSOCIATION -YOUR FAIR DEAL GUARANTEE
C
VISA- ACCESS- AMERICAN EXPRESS
ALL CARDS WELCOME
■DINERS CLUB
J
LEARN TO PLAY
BRIDGE ON YOUR
HOME COMPUTER
Enjoy learning to play bridge with Bridge-master, a
complete bridge tutor professionally prepared with
world expert Terence Reese.
Listen to the commentary as you are coached step by
step through the game. While you listen you will
learn and play bridge Bridgemaster contains
commentary and computer tapes and a useful
reference book — everything you need to leaf n bridge.
"BriOgemaiter really does Orrng [he game alive for the
beginner "Soft.
' 'A realty professional program 1 00% value for
money " Home Computing Weekly.
For the Sinclair 2X Spectrum T 6J48K, Commodore 64,
BBC B and Electron — £24.95
Sinclair ZX@] IKH&K — £19.95
MAIfER
Available from Boots and other leading computer
stores or direct from H rid gem Alter, Freepost. Dept. SU1,
PO Bo* 163. SLOUGH SLZ 3YY.
Pfifes iixluoc WAT, post and pjch.png RemittarKe* payable to Bridgemastpr
dj§L> 48K ZX SPECTRUM
NEW RELEASES . .
^y^-'MtmV-
mmmi!mm±
■ .:■■:
■ ■ ■:■:
CAN SOMEONE GUIDE ZIPPY THROUGH ALL 7 LEVELS
TO THE EXIT? £500 AWAJT5 THE SPLAT CHALLENGER
WITH THE HIGHEST SCORE.
"An Original •& Entertaining game l hat
gets you hooked"
PCN
£5.50
AisotrQm
MOUNTAINS Tr^sfSTTJ*!
Of KET RS5L-—
A GIANT OF AN ADVENTURE PROGRAM' THE MA NY
FEATURES INCLUDE COMBAT. INTERACTIVE BEINGS.
MONETARY SYSTEM FIRST YOU HAVE TO FIND THF
MOUNTAIN & THEN ? AS WELL AS BEING A FAST
INGENIOUS COMPELLING ADVENTURE IN ITSELF —
THE MOUNTAINS OF KET 15 THE FIRST OF A 3 PART
SERIES THAT BUILD5 INTO A MAMMOTH
ADVENTURERS CHALLENGE
BY R A McCORMACK £5 , 50
MJWRGE1IEST
mm
1984
THE BRITISH ECONOMY WITH YOU AT THE CONTROLS'
WHAT 50RT OF CHANCELLOR WOULD YOU MAKE
WITH SEVERAL BILLION POUNDS TO SPEND & FIVE
YEARS TO THE NEXT GENERAL ELECTION? GRAPHIC
DISPLAYS. HISTOGRAMS ft A ANNUAL PERFORMANCE
RATING ARE ALL INCLUDED TO SHOW HOW YOU ARE
DOING HOW MANY YEARS WILL YOU LAST?
ELECTED BY RM H.CARTER £5.50
.
All programs run in the 48K ZX SPECTRUM and are
available from a!] good computer shops In case of
difficulty please order direct using the coupon below
ATTENTIOff PROGRAMMERS
TOP ROYALTIES PAID ORIGINAL PROGRAMME WANT* N F1 IS Al I
MAKES 01 POPULAR HOME COMPUTERS
Pleas* icnd me (ptessc tick) SPLAT □
MOUNTAINS OF KET □
1984 n
All a I £5 SO each (inclusive of VAT. and 1st class postage)
i enclose cheque/PO for £ or please debit my
Access account no
1
-
Name.
Address
<!|P
[HtEHTIVE SOFTWARE LTD
S4 Lli Jf &G H STREET I E A PI KG \Q1 H > i9 I &7 PJ
SINC LA I K I 5 ER Febmt ry 1984
GILSOFT
[cpj software
CDmPUTH5DLVE ltq
ll\IETSCFT
II1TERRKE
PUBLICATIONS
EAST LONDON
MIIIISV
SOFTE/CH
COMPUSOUNO
Hilderbay
Melbourne
Heincmann
Educational Books
CAMBRIDGE
COMPUTING
GAME LORDS
Ik*
Clephant
Software.
FALSOFT
COMPUTERS
k at some of the
if you
t visit the
Are you missing out on everything that's right for your ZX machine?
Do you want to see the latest developments in hardware, software,
books, peripherals and gizmos?
Then there's only one venue that's a must for you.
The 10th ZX MICROFAiR at ALLY PALLY on the 4th February 1984!
^ Nth ZXMicrof air.
Ally Pally February 4th.
Saturday 4th February 10am -6pm
ALEXANDRA PAVILION, ALEXANDRA PARK, WOOD GREEN, LONDON N22
Advance Tickets from: Mike Johnston, 71 Park Lane, Tottenham, London N17 OHG.
Prices; Adults £1 Kids (under 14) 50p. Parties of 10 or more at 10% discount!
Please make cheques payable to ZX MICROFAIR and enclose S.A.E.
Prices at the door: Adults £1.25, Kids 60p
Exhibitors - phone Mike Johnston on 01-801 9172 for details!
SFNCIAFR USER February 1984
House iff
Computers of
WigmorcSt
WbWbWb
l OTMLOm tN It
Iheminttui rettiner
rSMCRQSHQP
m
BASICARE
MICRO
SYSTEM J
PHIPPS
ASSOCIATES
TRonseoEm Ltd.
W
ANIROG
f hings you'll miss
next IX Microf air.
There's hundreds of exhibitions, lots of bargains, and usual friendly
atmosphere with a Bring-and-Buy Sale, User Groups, Refreshment
areas, and bars!
All in all a good day out . . . and a good chance to see everything
concerned with Sinclair Machines!
Vfndl ft ™»«ri <Tm i^*>i!" 10**?"
ice Oirflit UT^rc In f **i&tt*p
imtitKSi
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pUllgrx: ID 8* Vlhlll H jfWI *3
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• He > in* f keMUi LirK-' linn NhIMki
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10
ZXlMCROffiR
ALEXANDRA PALACE
FEBRUARY 4th 1984
SINCLAIR USER F&maty 1984
SPECTRUM -ZX 81
n
(k-Hmrl ^mpt (ASH
IXIVlNGIDrFPtRlNTO
VOUHZX SPECTRUM
Make the most of your micro with
these acclaimed books from
the experts!
D Mastering Machine Code 00 Yoiu ZX
SPECTRUM
Teni Baker, 3 ] 5 pages
□ Beyond Simple BASJC — Delving Deeper iato
YouiZX SPECTRUM
Dilwyn Jones, 206 pages
Programming Youi ZX SPECTRUM
TirnHdrinel], Dilwyn Jones, 230 pages
3 60 Games and Applications ku the
ZX SPECTRUM
David Harwood, 90 pages
□ Creating Arcade Games oo the ZX SPECTRUM
Daniel Haywood, 1 58 pages
□ Instant SPECTRUM Programming
Ton Hartnell. 1 26 pages, C60 cassette
□ 20 Simple Electronic Projects for; the
SPECTRUM, ZX81 and Other Computer*
Stephen Adams, 1 04 pages
D Putting yam SPECTRUM to Work
Chris Callender. 88 pages
Q SPECTRUM Machine Code made Easy
Vol. One (for beginners)
James Walsh. 222 pages
n SPECTRUM Machine Code made Easy
Vol, Tw (advanced programmers)
Paul Holmes. 1 52 pages
□ Mastering Machine Code on yotu ZXS1
Tom Baker, 1 B9 pages
□ Getting Acquainted with youi ZX01
TimHarinell, 128 pages
G The Tiring Criterion — Machine Intelligent
Programs, lor the 1 6K ZX8 1
Harrison. Charlton, & fortes, i 54 pages
D 34 Amazing Games for the IK ZX81
Alastaif Gourlay, 54 p. I
□ 49 Explosive Games for the 2X8 1
Tim Hartnell. I38pag.™
£9.95
17 95
£6 95
£4.95
£3.95
£4.88
£6 45
£4.95
£S-9S
£5 95
£7.30
£5.95
£5-25
£4 95
£595
Interface Publications, Dept. St), 9-11 Kensington
High Street, London W8 5NP.
Please send me the boots indicted I enclose £
Nam
Add
II1TERRKE
PUBLICATIONS
. i W I !
LIBRARY OF ADVANCED MATH /STAT/E CON
TAPE 1: MATRIX OPERATIONS spectrum E6.»3.uai mm
S-da A. Inversion , mu Hip! icai ion add il ion , subtraction and seal ar m u implication or matrices
and vector* wrilhln one single program. Any output can in 1 urn pe us«nJ as 1 ho input ot the
next operation without re-typing.- Capacity 16KZX81 : 2SX25. 1SK Spectrum: 1 ! X 1 1 . dUK
SfiSCJrym: 4BX48.
Sida B: Determinants of square matrices.
TAPE 2: POLYNOMIALS kpecthuh c«.«9, zxai es«
Sid* A: Includes Quadratic equations -las degree 2 polynomials) and NMwtun -flaphw*
and halt' interval search met hodi Tor nig her degree polynomials. Computes the roots with
a digits of precision.
Sida 8: You tan plot polynomials In any interval Bind a namme I he>r roots, a utromum pot nti
TAPE 3: INTEGRATION spec t hum £6.95, KZfll «.as
Side A. Integral ion ot (unctions by Simpson's and irap«.tOid*l rule*. Also compute* the
area, enclosed by iwf> functions .
Side B: Plot of integrals. Integration can t* u-i*v*lised on the screen
TAPE 4: SUPER-REGRESSION cm »
Side A. A highly developed mull iva nate reo fotsion program with HEAD/ 1 MPUT ■ CM AhGE
- LPRINT - SAVE DATA lac ilitifi-a. exponential and geometric regression made possible by
t-Ofl/Ln option on eacn variable. Displays aghmtted coefficient, standard arror*. I-
statistics, R2. corrected R2.F Statistic, degree ot Fredom, Durtun-Watson Statistic, lum
ot squared residuals uariance-covariance malna, matrut ut correlation cos1ti(:<*nH.
Interpolation and PLOT of Restduala. Capacity e«amples (no d variables Xno. ot
observalsonsl 16K 2XHl:2x:40O. &XZOQ, IQXIOQ; t6K Spectrum. 2X76, 5X30: 40K
Spectrum 2*1850. 6X900, 10X50Q.
SideB: Plo-1 of tuvariate regressionaon a sel at numbered data pomta.
TAPE 5: PROFESSIONAL LINEAR PROGRAMMING tt4SS
Side A A user Irlendly optimization program capable of handling all aorti ol linear
programm Ing problema (any oomblrtalion Of <, =. > con*ir»lnlaa nd a i M) , icKQ,-o <xl<«
Sign COhilf lintt). I NPUT ■ PRINT ■ SAVE DATA and CHANGE - D ATA tscilit y 1 rj* lenaihvlly
a nalysta. isplays th* cannon itat equivalent «l the primal, values ot afach variables and
dual. Capacity examples (no. ot vana bles X no. at const ra mis i. 1 BKZXS1: 1 0X3 1 , 1 SX 1 S,
20X13; 1SK Spectrum; BXBj 4SK Spoctfum; 10X48, 26X3$. SOKZB.
Side H Solutions of simultaneous aquations.
TAPE 6: STATISTICS en.ss
SideA: DESCRIPTIVE STATISTICS. Analysis ot grouped or unorouped data, hislogi am*
Output includes mean, mean deviation, median, variance, standard deviation, standard
error. 4K(woess, hurloaiB, moments end other relaled statistics.
Side B: STATISTICAL TESTS: Heat, F-te*I. Mann-Whitney U laat, Chi-aquare test,
Wileoiiori'S s.igned ran* test Both programs have READ/lt*PUT-,CHANQE-.LPfllNr-
SAVE- and SORT-DATA laCL|ill«.
t Cheques payable to:
UNlVEflSITT SOFTWARE
20, St. Paten Street London M1 9JP
Tel: 0t 3S9O0T6
USA ROYALTIES
FOR YOUR
EDUCATIONAL SOFTWARE
SEARCH FOR RIGHTS
For USA sales of published or not-
yet-published education-through-
games type software for children
Aged 4-11. Good money and
royalties.
Write with details of your products to:
USA RIGHTS
c/o Pro micro Ltd,
5, Dryden Street,
London WC2E 9NW
ID
SINCLAIR USER i'ebrmry im
I Sinclair User Club g
Hardware and games
offers for members
ON OFFER this month we
have both software and hard-
ware, all with a 10 percent
reduction on the retail price.
The hardware includes an
expandable RAM pack for
the ZX-81 and a joystick kit
for the Spectrum, The Protek
joystick interface is quickly
establishing itself as one of
i he standards for the indus-
try TheQuickshot joystick is
also sold by Protek and makes
a good combination with the
interface. It has a pistol grip
handle and suction-cup feet
for easy manipulation.
The Stonechip expandable
RAM pack has a buffer at the
back so that you can add extra
RAM if you need it.
The software offer features
games for both the ZX-81
and Spectrum. In the front-
line is J. K. Greye with its
famous series of games tapes
for the IK and 16K ZX-81,
The offers from this com-
pany also include two games
for the I6K or 48K Spec-
trum. 3D Vortex takes place
in a swirling space abyss. Ar-
cadian includes four games,
including a version of space
invaders.
Two other major software
houses are offering famous
products. Legend produces
its first release Valhalla,
which is already being hailed
as the new Hobbil and Psion
is offering Scrabble, a faithful
version of the board game.
All these offers are onlv
open to members of the club.
If you are not yet a member
you can send in your order
with the membership form.
ZX-81 Software
Games Tape 1
Games Tape 2
Games Tape 3
Spectrum Software
Arcadian
3D Vortex
Valhalla
Scrabble
Stonechip hardware
ZX-81 16K expandable RAM pack
Protek hardware
Joystick interface {Spectrum)
Quickshot joystick (Spectrum)
List
price
£3.95
|3.95
£4.95
£4.95
£14.95
£15.95
Offer
price
£3.45
£3.45
£4.45
£4.44
ft J ■ ili)
£13.45
£14.35
£19.50 £18.00
£14.95
£14.95
£13.50
£13,50
CLUB BENEFITS
Bi-monthly club cassette available to all club members.
Special discounts on hardware, software and banks,
Members recover their membership fee many times over.
Free Club software. Telephone Helpline;,
Machine code teach-in. Technical advice.
Solving a question
of precision
A WHILE AGO one of our
members called the club
helpline with a software
problem. He was comparing
2 numbers in an IF state-
ment, but ah hough they
should have been equal, the
comparison was not correct.
It transpired that one of the
numbers was a constant while
the other was an expression.
The expression should have
evaluated to exactly the same
value as the constant. The
member was not a beginner,
and had tried the normal de-
bugging procedures. When
he PRINTed the numbers
they both looked exactly the
same on the screen, yet the
comparison failed.
Sinclair Baste holds num-
bers in binary floating point
format— most other versions
of the Basic do too. Not all
decimal numbers can be ex-
actly represented. In the case
in question, one such number
was repetitively added to it-
self until the minute dis-
crepancy between the deci-
mal and binary representa-
tions had a cumulative effect.
The binary version was not
exactly the same as it would
have been had the decimal
numbers been added the
same number of times and
then converted to binary.
The reason why the num-
bers looked the same when
PRIM' fed is quite straight-
forward. Numbers are held in
memory to a greater degree of
precision than that to which
they are PRHsfTed, for the
very reason outlined above.
Let us assume you are
comparing A and B. If you
are experiencing the same
problem, then instead of
using IF A = B THEN..."
use IF ABS(A-B) <>0001
THEN. .."With this method
you can set the degree of
acceptable accuracy yourself.
I
MEMBERSHIP
FORM J
I wish to join the Sinclair User Club and enclose my
subscription off 12
Name . , ,
Address , I
I
i
;, ; i
Which computer do you own?
ZX-81 Spcctoun
Send your coupons to Sinclair User Club, EOC
Publications, 196-200 Balls Pond Road, London Nl
4AQ. Cheques should be made payable to Sinclair
User Club.
SINCLAIR USER Ftbma ry 189*
il
s Sinclair User Club
1
Britain
Aylesbury Computer (Hub; 12 Long. Plough, Aston Clinton, Ayles-
bury, Bucks.
Aylesbury ZX Cunipmtr Club: Ken Knight, 22 Mount Street,
Aylesbury (5181 or 630867). Meetings; first Wednesday and third
Thursday of the month.
Basildon; Roundatre Microcomputer Users 1 Club. J Haxell, Basildon
2851 19/416333. Meetings every Wednesday' 7-30 W 10.3u f n:i.
Bristol Vaic and Sudbury Computer Club: 99 Woodchester Vate,
BristoLBSI7 4TX
Colchester Sinclair User Group: Richard Lawn, 102 Pretrygatt Road,
Colchester CO 3 4 EE.
Crewe and Nantwich Computer Users' Club: j E A Symondson, 46
London Road, Stapeky, Nantwich, Cheshire CW3 7JI..
Doncasler and District Micro Club: John Woods, 60 Dundas Road.
Wheatley, Doncasler DN2 4I>K; (0 302) 29 357. Meetings held on second
and fourth Wednesday of each month.
Eastwood Town Microcomputer Club: E M Kyan f 15 Queens Square,
Eastwood, Nottingham NG16 3BJ.
Edinburgh: Edinburgh Home Computing Club. John Palmer (031 661
5181) or tain Robertson (0 HI 441 2161).
l-./l i i-l.iiLic.iLiiin.il ZVMi *] Users* Gtnnx Brw DeescuJ) Higbgate
School, Birmingham HI 2 'IDS
I'unirti Computer Club: R J C Wade, 67 Sands Road, inversion,
Cumbria (Uhrerton 55068), Meets every other week on Wcdnesd*)
evenings.
Glasgow ZX-80 81 Users' Club: Ian Walt, 107 Greenwood Road,
Clarkslon, Glasgow G76 7LW (041 638 1241), Meetings; second and
fourth Monday of each month.
Gravcsend Computer Club: do The Extra Tuition Centre, 39 The
Terrace, Gravescnd, Kent DA 1 2 2HA. Bi-monthly magazine and mem-
bership card.
Hassocks IX Mien User Club, Sussex: Paul King (Hassocks #530).
Invert!) de ZX-81 Users* Club: Robert Wan, 9 Si. Johns Road.
Gourock, Renfrewshire PA 19 II'L (Gourock 39967). Meetings; Every
other week on Monday at Grecaoc* Society of the Deaf, Kelly Street,
Greenock.
Keighlcy Computer Club: Colin Price, Redholt, Ingrow, Keighley
(603153),
Lambeth Computer Club; Robert Barker, 54 Brixton Road. London
SW9 6RS
Liverpool ZX Club: Meetings every Wednesday 7pm at Youth Activities
Centre. Belmont Road, Liverpool 6. Detail* from Keith Archer, 031-236
6109 (daytime).
Manchester Sinclair Users' Club: Meets every Wednesday, 7.30p m -
at Longsight Library, 519 Stockport Road, Longsighi 06 I 225 6997 or
i if, I 445 6316,
Mersey side Co-op ZX Users* Group; KliiH Dri.scc.ll, 53 Melville
Road, Broil e, Merseyside L20 6NE; 051-922 3163.
Micro Users' Group: 116 Kingston Road, Ewell Epsom, Surrey KTI9
Newcastle (Staffs) Computer Club: Meetings at Newcastle Youth and
Adult Centre, Thursday, 7.30 to 10 pm. Further infnrmatioti from R G
Man in (0782 62065).
North llenfurdshire Home Compwicr Club: R CiutLhfield, 2 Dur-
ham Road, Stevenage; Meetings; first Friday of the month ai the
.Settlement, Ncvells Road, l.etchworih.
Northern Ireland Sinclair Users' Club; I" Gibson, 1 1 Filjuames Park,
rCewtownards, Co Down BT2 3 4BL".
North London Hobby Computer Club: ZX roup meets ai
Nonh London Polytechnic, Hoi Iowa v Read, London N7 each Monday,
hprn.
Nottingham Mierwcompuier Club: ZX-80-81 users' group, G E
Bastard, 9 Holme Close, The Pastures, Woodborough, Nottingham.
Nottingham ZX Spectrum Club: Would like to hear from new
members. D Beanie and P Riley, 5? Kingsley Crescent, Sawley. Lung
Eaton, Nottingham NG10 3I>A.
Orpington Computer Club: Roger Pyalt, 23 Arundel Drm Orpins
tea, Kent (Orpington 20281).
Perth and District Amateur Computer Society: Alasiair Mad'her-
son, 154 Oakbank Road, Perth PHI 1HA (29633). Meetings; third
Tuesdav "1 each month at Hunters Lodge Mtsiel, Hankloot.
Regis Amateur Microcomputer Society; R H Wallts, 22 Mallard
Crescent, Pa^MfO, Bognor Regis, West Sussex P02I 4UU-
Roche Computer Club; 8 Victoria Road, Coop Rooms, Roche, Corn-
wall; 0726 890471.
Scunthorpe ZX Club: C P Hazleton, 26 Rilestone Place, Botlcsford,
Sainlborpe; (0724 63466).
Sheffield: South Yorkshire Personal Computing Group. Enquiries to R
Aldcrton (0742 20571), S Grav 10142 151440), P Sanderson (0742
351895).
Siltingbournc: Anurag Vidyarth (0795 73149), Would be interested m
bear from anyone who wants to start a club near the Med way towns. .
Si Albans: Bj -jtioiit Illy meetings and a magazine. Details from Adam
Slater, 40 Watford Road, Si Albans, Herts ALI 2HA. Telephone: 0727
54176.
Sir auto td-on- Avon Computer Club: Meets on the second Wednesday
or every month. Telephone: 0789 68080 for details.
Swansea Computer Club: H J Candy, Jr GotipH, Kjllay, Swansea
(203811).
Swindon ZX Computer Club: Andtcw Banktt, 47 Grosvcnor Roid,
Swindon, Wilis SN I 4LT; (0791) 3077. Moot lily meetings and library.
Sutton; Sutton Library Computer Club, D Wilkins, 22 Chestnut Conrtj
Mulgrave Road, Sutton, Surrey SM2 6LR,
West Sussex.; Midhurst and District Computer User Group. Enquiries
Id V Weston (073 081 3876), R Armes (071 08 J 1279).
Worle Computer Club; S W Rabone, 18 Castle Road, Worle, *«i™-
super-Mare BS22 9JW (Weston super Mare 513068). Meetings:
Woodsprings Inn, Worle, on alternate Mondays.
ZX-Aid; Conrad Roc, 25 Cherry Tree Avenue, Walsall WS5 ill I l'lcase
include sac. Meetings twice monthly.
ZX-M/ZX-81 Users' Club: PO Box 159, Kingston-on-Thames. A postal
club.
Overseas
Austria: ZX User Club, Thmtias Christian, da Wissenschalt PofkIh t
V,, Postfach 141, Al 190 Vienna. Meets every first Friday of the month,
Telephone 0222-44 Z2 050 for details.
Belgium, France and Luxembourg: Club Micro-Europe, Raymond
Bctz, 38 Chemin du Moulin 38, B-l 328 Chain, Belgium (32/2/6537468).
Denmark: Danmatks National ZX-8081 Kluh (DNZK), Jens l^rson,
Skovmosevef 6,4200 SlBgelnc, post giro 1 46 24 66.
ZZ-Brugergruppcn i Danmark, Boks 44, 2650 Hvidovrc, Gratis rncdlrni'i-
k:tb up. gralis blad til enhvei inturesserel.
J Niels-Erik Hanmann, OZ-ZX-RadLoamator, Brugcr ( rruppc, Rrcdgadc
25 DK-4900, Nakskov,
East Netherlands: Jottathon Meyer, Van Spaen Straai 22,6524 H.N.
Niimegcn; (080 221411).
Germany: ZX Club, a postal ilub; coniacr Ariben Decker*, Pottfoch
967, D-7000 Stuttgart I, West (Termany,
Indonesia: Jakarta ZX-SOlti 1 Users 1 Club, J S Wijaya, FO Bos 20, Jkukg,
Jakarta, Utata, Indonesia.
Irish Amateur Computer Club: Martin Slapleton, 48 Seaeuurt,
Clontarf, Dublin 3, (331304).
Irish Sinclair Users Club: PO Bos 1238, Dublin 1. Publishes a
newsleller. Seod SAE ku JetJiK.
Italy; Sinclair Club, Via Motino Vccchio 1 0/1 •', 40026 Imola, Italy.
Gcnova Sinclair Club; Vittorio Gioia, Via F Corridoni, 2-1, telephone 010
1125 SI.
Micro-Europe; Belgium or Club Perit-Mkro, 19 Rue de Tilly, 92700,
Colombes, France; associated with Club Micro-Europe.
Republic of Ireland: Irish ZX-8081 Users 1 Club, 73 Cnoc Crionain,
H.tilrj Atha, Qieth I.
Singapurc: Sinclair Users' Group: Eric Mortimer, ID Wiiincr Coun,
1 eonk Hill Road, Singapore.
South Africa: Johannesburg ZX-80-8I Computer Users 1 Club: S Lucas,
cto Hoechsi SA (Pry) Ltd, PO Box 8692, Johannesburg.
Johannesburg ZX Uteri' Club; Leaactl E R Pisher, PG Box 61446,
Marshallstown, Johannesburg.
Spain: Club Nacional de Llsuarios del ZX-BI, Joseph-Oriol Tonus,
Ayda. de Madrid, So 201 207, 10, 3a esc. A Barcelona 14 li-iUaoa
International ZX Spectrum Club: Gabriel Indalcciu (jnn, Surdana, 4
atrico 2a, San Andres de la Barca, Barcelona. Send international reply
eoupon. PfOdures a bi-manlbly ntegSSBC Spanish ZX Micro Club:
Apartado 181, Alicante (Costa Hlanca), Spain.
ZX <:iub Spain; C Benito PO Box 3253, Madrid, Spain,
Swedish ZX-club: Sinclair Datotklubben, Box 1007, S-122, 22 Ens-
kede, Swedes
United Stales: Bay Area ZX-80 l.:ser tJruup, 2660 t js Aromas, Oakland
CA946 1 L- Harvard Group, Bolton Road, Harvard MA 01451: (617 456
1967).
12
SINCLAIR USER
SEEK AND DESTROY
-^j
You're on a top secret mission. Suddenly your position
is threatened by an enemy submarine. You must seek
and destroy the intruder.
As the captain of a second world war S-type submarine
you have radar and asdic at your fingertips. Plus 18
separate controls which allow you to dive, surface,
and manoeuvre your craft. Watch out for enemy
aircraft if you stay on the surface too long.
Every tape includes a **two computer option"
compatible with "Interface 1" allowing you to
link two computers together in a duel.
See the complete range of action packed computer
games from Protek at your local computer store,
VKA
^vaU
Com i
.odore
soon.
Protek Computing Ltd, 1 A Young Square.
Brucefield Industrial Park, Livingston. West Lothian. 0506 415353.
SINCLACR USER February I9S4
IS
A NEW WORLD OF ADVENTURE
SLACK CRYSTAL
VENTURES OF
SLACK CRYSTAL
A THIRD CONTINENT SERIES
ADVENTURE
Tne Classic si k program adve
game for Ihe 4&K Spectrum and t©K
2X81 computers- N
is complete uwthoul ii "Black Crystal
an exceltefft graphics adventure and a
wet mc-ughl out oackage Smciait
User April 83 "Black Crystal has
impressed me by its sheer quantity and
generally high quality ot presentation I
am al^id I have become
Home Comovhrtg Wee^h Apnt S3
Spectrum 48K 18CK Ql program R
parts onk E7,5Q
ZXB1 16K over TOOK ot fwoym ■ "■
asven parts only £7,50
WHY PAY MORE FOR LESS OF AN
ADVENTURE?
THE CRYPT ny Stephen Renlpn
■ me many
■enges ;nal s? -*'\ conirnni you '*nen
you dare fc ente« THE CRYPT. •
baWe with giant scorpions Hei! spa
PCS- - Neds ar-
- . ■■• ■■ ;■ me Dark ("' .
" Iha arcade style a
_ Available lor the 48K Spectrum at
E4.&5
A(^)fF
STARFORCE ONE
THE ADVENTURES OF
ST BERNARD
An e*i ecocte
arcade game where .
ir-trepidSl E
. t'.astelarfKls So rescui
•forn (he elulcfws at the abam '
Available fOr 48K Spectrum £5 95
STARFORCE ONE
- o.-! rhe roeot guarcfiBrts o> tne
Central Cnr- pole* in a superbly stybsed
- dimensional bat1«e game
(100% machine code arcade action)
Available for 4SK Spectrum C5 9ft
I
v@itcs.iiia: BHn&e&n volcanic dungeon
-~-iw**». A TM|RD CONT | NENT SERIES
I ADVENTURE
Enter (he realm o' Myth and Magic in
this classc Fantasy Adventure E
with Mag' a ana her Evi Mbes 1o rescue
n a Esfin Princess Imprisoned m a
Crystal Cotlif Deep unthrn me volcanic
I 'anaonn Dungeon set up9
ensure that you can r>ay this aod»c(rve
adveni^e t)"-tn and ove< again Stngle-
'-ntry cuts QUI VSSome typing
associated with other Te*r Adventures.
Instruction Mai- Map ot Dungeon
enclosed
' The whole game mechanism makes tot
a very Addictive Program and one thai
remains a firm favourite with many
Adventure* s ' '
Popular Computing Wet- ' :)83
Far the 4BK Spec I rum pr ZX-B1 16K
@ C5-00
A qlm™ IcMl Myb-
,«$#**_
THE DEVIL RIDES IN
I uttered the lasl incantad i
cock struck thirti
Ick a I
ckjI o1 rr.o shaOi
fLjry a9*'is! rof but i was not
■ • ■
astnde a •■ rsa jomeo the batfle
Avt ! took
■careful a*m M y chances '.vere sSrr
my luck hero
(Fast mowing, machine code, all
action, Arcade game)
Available (or 4SK Spectrum £S.&5
*ID£S I.
The above are available through most good computer stores or direct from:
CARNELL SOFTWARE LTD.,
North Weylands Ind. Est., Molesey Road, Hersham, Surrey KT12 3PL.
DEALERS: Contact us for your nearest wholesaler.
"THE WRATH OF MAGRA"
A THIRD CONTINENT
SERIES ADVENTURE
The first born has been destroyed The
Black Crystal of Beroth has been banished.
The ajliance of Evil has been defeated by the
armies of Lord Fendal. So ends the Third
Age. Mow we invite you to wnte your name
m the history of the Fourth Age of the Third
Continent.
>u will meet friends and enemies, old and
new, in the long awaited sequel to Volcanic
Dungeon. Using high resolution graphics
and combining the best qualities of Black
Crystal" and 'Volcanic Dungeon , ^e will
allow you to become part of this tale of
revenge.
"The Wrath of Magra" comes as three, 48K
programmes on cassette, boxed with in-
struction manual and book detailing the his-
tory of the Third Continent and the many
speils you wilJ be using throughout the
game For the 48K Spectrum @ £12 50
NOTE: The Wrath of Magra " is a complete
adventure. You need not buy Volcanic
Dungeon' or "Black Crystal" to play it.
Available from Feb '84
CARNELL SOFTWARE LTD
Pat the Postman
Really original. All Pat
h as to do is col lect
parcels whilst
avoid) n 9 obstacles -
like cars, fires, trains,
etc. Skill level and
Hall of Fame.
«« Sptclnim, £6. IS
De-ffendar
Earth is under attack
from mutant aliens in
an accurate
implementation of a
top arcade game -
and one of the most
difficult to survive in!
481 Speclnim Ifi 95
Cruise Attack
Save the city from
annihilation in this
wonderful version of
an arcade favourite.
Nine skill levels,
bonus points for
attack ships.
Nanas
Catch the bananas,
miss the coconuts..
Easy? Try it and see,
Simple in concept,
hilariously
entertaining- it'll
drive you bananas.
1GK Spectrum. 15,35
Ttmequest
A warp- space
accident spreads
your capsule across
time. As you land In
each new era, fresh
penis face yc-u. A very
skillful graphic
adventure
UK Spectrum 16 gs
mJsU
One Hundred &
Eighty
That famous shout
tells you what it's all
about! A good
implementation of a
difficult game-
doubles, trebles,
twenty five and hull
all possible.
4*K Specimm IB 95
Land of Sagan
A quest to find the
long lost Staff of
Health, (sit in one of
the castles? Or in the
Tower? There are
plenty of problems -
and plenty of
opponents- in this
great graphic
adventure.
48 K Spectrum. E6.A5
Creepy Crawler
An authentic version
of one of the most
addictive arcade
games devised. All
the usual features
{Centipede, Spider,
Bug, etc) with full use
of Spectrum graphics
and sound.
I BR Spectrum. tSJS
Mad Martha II
Great sequel to the
best-selling Mad
Martha. Hilarious
graphic adventure,
with hero Henry in
sunny Spain, beset by
wacky waiters, mad
bulls and the wrathful
Martha,
48 1 Spectrum. 16.95
$ AS Assault
You r m Issio n - re&c ue
the Russian
ambassador from
terrorist kidnappers,
before the Kremlin
declares war. Loads
in two parts- your
rating in the second
depends on your skill
in the first.
48K Spetimm 16 95
..
3
Star Trek
Defend the star
systems against the
Klingon attack. Runs
in real time- so you
have to make the
right decisions fast!
481 Spectrum 16.95
Drakmaze
Find your way round
Draculas domain.
A gam e to get you r
teeth into!
49K Spectrum. 18.85
Laserwarp
Invaders, Aliens, this
game has the lot -and
you have to survive to
destroy the Master!
Simple controls, far
from simple task,
4ftk Spec Iran 16.95
Knockout
No aliens, lasers.
invaders or rockets -
just simple but
absorbing fun which
up to 4 players can
enjoy.
4BK Spectrum tb 95
Galakiioiis
Watch out as the
G ai a kz ions break
formation to attack In
such force that no
mere human can
survive!
16K Spectrin 15.95
See them at
Lightning, PCS,
Tiger, Co-op,
Men lies, W H Smith
a other leading
retailers
PHONE YOUR VISA
OR ACCESS
NUMBER
Other great new Mikro-G en programs coming soon -watch out for them!
Please make cheques/ PO payable to 'Mikro-GerT and add 40p post & packing per order.
Mikxo-Gen k 1 Devonshire Cottages, London Hd, Bracknell RG 12 2TQ Tel: 0344 273 1 7
16
SINCLAIR USER February 19H4
News
Professional
test for air
controller
HEATHROW Air Traffic
Control, a 16K Spectrum
simulation game from Hew-
son Consultants, was assessed
by a professional air traffic
controller on the Central
Television Magic Micro Mis-
iion recently and passed the
Test with flying colours.
In the programme David
Gunson from Birmingham
airport and Stephen Martin,
the programme's regular soft-
ware tester, gave the simula-
tion a score of four out of five
for entertainment value.
Presented by Jo Wheeler,
Magk Micro Mission is a new
production featuring a space-
ship sent to explore the new
boundaries of computer
knowledge. It is screened in
the Central Television, Ulster
TVS, Border Television,
Tyne Tees and Television
South West areas.
Manic Minor
seeks new
horizons
THE BUG- BYTE best-sell-
ing program Manic Miner
is appearing under a different
labd.
Matthew Smith, the 17-
year-old-author, has left his
old firm to join Software Pro-
jects 3 a new company. Smith
will become a director of the
company when he comes of
age.
Besides Manic Miner,
Software Projects will be
marketing its sequel, Jet Set
Willy, as well as several
other new games,
Bug-Byte, which held 3
licence to produce Manic
Miner but not the copyright,
says it is not too hard-hit by
Smith's decision to move. "It
•s M ill an excellent game and
we have 50,000 copies of it
left," says Bug-Byte director
Tony Baden. "We wish it the
best ofluck under any label."
Surprise launch of
new Sinclair computer
THE NEW business ma-
chine from Sinclair Research,
which has been code- named
the ZX-83, was launched in
January, The machine has
twin Microdrives for fast ac-
cess to mass storage and a
typewriter-style keyboard, It
does not have the flat-screen
television many people were
expecting and, as a result, is
not as portable as was first
thought.
The microprocessor chip
at the heart of the new com-
puter has been specially-
designed to Sinclair require-
ments and is being manu-
factured by American elec-
tronics company Motorola.
Interface Two cartridges
have arrived
THE SPECTRUM Interface
Two has arrived in the stores
and the software for the new
ROM-based peripheral has
started to flow.
When the ROM board was
launched the only cartridges
available were Planetoids,
Space Raiders and Backgam-
mon, which had previously
been sold on cassette in the
Sinclair Research software li-
brary. The new range of soft-
ware, including packages
which had originally been
produced by Ultimate Play
the Game, did not arrive un-
til several months later. The
games included jetpac, Cook-
ie and Tranz Am. 4
The Interface is being sold
in W H Smith, and Boots has
also placed a large order.
Future plans for the inter-
face have not been fixed but
the company is considering
putting utility packages and
languages onto ROM. A
spokesman says:
"We have not decided
what we shall do. h is hoped,
however, that the Micro- Pro-
log language will at some
stage be put onto ROM."
Interface Two seems to be
the last of the planned peri*
pherais which Sinclair Re-
search is to add to the
Spectrum, as it is dead-ended
and will take only the ZX
printer. It is, however, poss-
ible, tfcat. otjicr. peripherals
could be added between In-
terfaces One and Two.
Arab-speaking home computer enthusiasts, who have long dreamed
of being able to program in their own language, are happy Al last.
Riinwx Alhalahy. president of Autoram Computers in jeddah, Saudi
Arabia, has developed an Arabic version of the ZX-H1 — a major
breakthrough in the Arab world, where unlil jinw only large business
systems have hcen programmed in Arabic. Micro owners have had to
use English previously and the new version of the ZX-B1 1$ expected
to give Sinclair sales in the Middle Fast a considerable boost.
The incorporation of Mi-
crodrives with the machine
instead of the more usual disc
drives means that the price
can be substantially lower
than computers such as the
Apple IIj which costs thou-
sands of pounds. The cost of
the Sinclair is as little as
£400.
With the expansion of its
range into the business mar-
ket, Sinclair will have to
think about peripheral sup-
port, such as printers and
light pens. That means the
design of a new printer, as
the ZX printer will not suf-
fice for the business com-
munity.
The Microdrives may also
prove disappointing to many
business owners. Despite the
low cost of the machine the
Microdrive s in comparison
with disc, is slow. Potential
purchasers may choose a
more expensive disc-based
machine. The new machine
is, however j a great step for-
ward in the business com-
puter market.
— ^^^ — ^^— — — — — — — — F
Car game on
pop cassette
t'ANS of Shakin* Stevens
who buy his latest album,
The Bop Won't $top t on cas-
sette can enjoy the bonus of a
specially-commissioned game
for the 48K Spectrum.
Written by Olympic Soft-
ware, the game entails driv-
ing a car into Shaky'* "olc
house' while avoiding lethal
vampire hats, A huge score
will gel the player into
Shaky 1 ? top ten.
CBS Records, which pro-
duces the cassette, says that
the game was designed for
the Spectrum rather than any
other micro because it has
become the most popular
home computer in the U.K,
SINCLAIR USER February 1984
17
Software houses
fight piracy
WITH SOFTWARE PI-
RACY causing an estimated
loss in sales of at least £100
million, British software
houses have started to fight
back.
Quicksilva is leading the
way by pointing the finger at
various overseas operations
which are marketing illegal
software. One such outfit,
claims Quicksilva vice-chair-
man Rod Cousens, is an Aus-
tralian company called
Rocksoft, which has been dis-
irihuting bootlegged copies
of Psion, Bug-Byte, Quick-
silva and Melbourne House
games.
Melbourne House is itself
investigating piracy in Aus-
tralia and is taking legal ac-
tion. Alfred Milgrom,
chairman, said; "It would be
imprudent for us to make any
specific comments on any in-
dividual company before
court proceedings have been
taken. However , be assured
that we have a very aggressive
attitude towards pirating and
we do not hesitate to take
Mthnn Lkyd-J»nei and Mark Luats.
Cambridge Award
presentation
At the 1983 Cambridge
Award prize-giving, held at
the ZX Micro fair in Decem-
ber, Mark Lucas, right, was
presented with the first prize
of £1,000 by Melvin Lloyd-
Jones, director of Cases Com-
puter Simulations. Mark,
whose Spectrum wargame
Battle 191? was declared the
overall winner, also received
the Cambridge Award tro-
phy, pictured below.
The Cambridge Award is
co-sponsored by the software
house Cases Computer Simu-
lations and Sinclair User, and
is intended to encourage the
development of intellectually
stimulating games programs
written for the Sinclair com-
puters. Details of the 19&4
competition will be an-
nounced soon.
action whenever we find that
any of our rights have been
violated."
Another major publisher,
Bur-Byte, is tackling the
problem nearer home, by at-
tempting to discourage the
ever-increasing copying of
tapes by schools and com-
puter clubs. Having received
reports that pupils in one
school are recording software
with the co-operation of the
stalf, But-Byte has contacted
the County Council con-
cerned threatening legal ac-
tion unless the practice is
stopped.
The Guild of Software
Houses is looking into the
problem of piracy. Nick
Alexander, chairman of the
Guild and managing director
of Virgin Games, said, "It is
generally regarded that be-
tween one and ten pirate
copies are made for each
game sold." He believes that
the continuation of piracy
could result in the bankrupt-
cy of software companies.
Radio waves
can interfere
RADIO WAVES and inter-
ference from household ap-
pliances can afiect the normal
operation of home com-
puters, according to the tele-
vision programme Tomor-
row 1 ! World.
In many countries laws
govern the ways in which
computers must be protected
from interference. A silver-
coloured paint is put round
the inside of computer cases.
Computers in Britain,
however, have no such pro-
tection. A spokesman for Sin-
clair Research says: "We do
not use this type of protection
as there is nothing in the law
which states that we have to
do so."
Invasion of
the computer
stores is
nation-wide
THE FIRST of a new chain
of shops specialising in micro
software has opened at Chal-
font St Peter, Buckingham-
shire. Soft Shop will stock
more than 1,200 programs
for all the leading home com-
puters, including the ZX-81,
Spectrum, BBC, Commodore
64 and Oric.
Reflecting the preponder-
ance of Spectrum software on
the market, more than 350 of
the tapes are for that
machine. Most arc games but
there are also educational and
business tapes. "We predict
that the demand for Spec-
trum educational software in
particular will grow consider-
ably,' s says managing director
Stuart Kotchie.
The shop will also sell
computer accessories, such as
blank tapes, leads and joy-
sticks. A second shop is soon
to open in St Albans and
another 20 outlets through-
out the Home Counties are
planned.
Prism Software Products
has signed an agreement with
Greens of Debenhams to sell
software at 70 nation-wide
branches or the department
store chain. Three of the
stores will stock more than
1,000 titles, as well as books,
magazines and peripherals.
W H Smith has expanded
its computer operations by
opening 23 new computer
shops, bringing the total
throughout the country to 30.
The first three shops at W H
Smith branches were opened
in July, 1983 and four more
followed three months later.
All allow customers to try
complete computer systems,
including the Spectrum and
ZX-81, the Acorn, BBC and
Electron, the Apple lie, the
Commodore 64 and the Oric.
Computer sales are backed by
a wide range of software,
books and magazines.
la
SINCLAIR USER February 1984
L
News
John Lambert, our new
hardware reviewer.
JOHN LAMBERT has
joined the editorial team at
Sinclair User, taking over the
Hardware World section
from Stephen Adams.
He has extensive experi-
ence in the hardware field,
having worked for a large
add-on company. (1 1 come
from a family background of
electronics and it therefore
seems natural that I should
end up in computers. More
importantly I am a user and
my reviews will hopefully re-
flect this. I will be looking
not only at the design of the
hardware but also if it repre-
sents value for money, an im-
portant consideration these
days."
Floppy discs challenge
the Microdrive
COMPETITION for the
Sinclair Microdrive has ar-
rived in the form of the first
floppy disc drive and inter-
face package for the Spec-
trum
The Viscount disc drive
and interface is manufactured
by Interactive Instruments
and sold at £245 by the Spec-
trum computer chain. It has a
capacity of 100K on a 3^in.
floppy disc.
Another company which
has promised a floppy disc
drive for the Spectrum is ITL
Kathmill Ltd. The Byte
Drive WO has already been
launched for the Oric One
and the Spectrum version has
been promised for late April
or the beginning of May.
It is based on the Hitachi
drive and costs £260. It is
supported by a toolkit assem-
bler and text editor and is
aimed mainly at the business
sector of the market.
The floppy discs are
single-sided with a total ca-
Program
1 A tic Atac
2 lunar Jetifian.
3 Am Attack
A jet Pac
5 Pyramid
fi Kong
7 Death Chase
8 Chequered Flag
9 Manic Miner
ID Pool
Spectrum Top Ten
Last month Company
Ultimate
Ultimate
Quicksilva.
Ultimate
Fantasy
Ocean
Micromega
Psion
Bug-Byte
CDS
Memory
4SK
4SK
isk
It-ik
48K
16K
MX
48K
48K
16K
pacity of 440K, Approximate
file access time has been put
at three microseconds.
John Melville j a director of
ITL, says; "I am aware of
delays in the Sinclair market
and we will not be launching
the drive until we have suffi-
cient stocks available,"
A spokesman for Sinclair
Research played down the
idea that disc drives would
have any impact on sales of
the Microdrive, "We will not
start worrying unless those
companies can reduce the
prices of the drives. It is
probably not feasible to com-
pete with the Microdrive on
this level,"
Further information on the
Byte Drive 500 can be ob-
tained from ITL Kathmill
Ltd i The Old Courthouse 3
New Road, Chatham, Ken]
ME4 40J.
SINCLAIR USER Vcbman 1984
CONGRATULATIONS!
MARK LUCAS
Winner of the 1 983
Cambridge Award
a highly original
WAR GAME
BATTLE 1917
The game is played by two players on
a board 21x32 showing a map
which changes with every game.
Each player has 29 pieces including
infantry, cavalry, tanks, artillery and a
King, The object of the game, like
chess, is to kill the enemy King. The
game will appeal equalfy to all ages
and all skills This is the computer
age's answer to Chess, Available
from all good computer shops at £6.
Cases Computer Simulations Ltd, 14 Langton Way, London SE3 7TL.
20
SINCLAIR USER f-ibnuiry 1384
5«XTRIM
All games
only
£5.95
K
Selected titles available at dU^ • jf J \
Boots, W,H. Smith, J. Menzies, Laskys i nc vat and P&P
and all good computer stores, fur a free catalogue /
Dealer enquiries welcome Tel: 01-748 4125 *** SAE - \
Silversoft Lid, London House, 271/273 King Street, London W6.
$t
&*
\
/"}
DERBY DAT for the 4BK Spectrum Only 16,98
Gambling on any horse in toe field, '.ip to 5 players car. Lay
bets into Honest CLive Spectrum the bookmaker. Watch the
race begin as the tape Lis and mure! at toe amazingly
realistic 3D animator, as the riders jockey for position See
the slow motion finish Sound and Dolour used to its fullest
m this44K of superb programming. Rotrecommendedfor
compulstvegamb<ers.
CAVE MAH for any ZX Spectrum Only £4.95
:mer toe prehistoric world and discover the difficulties our
forefathers nad m obtaining food. The idea of the game is 60
pick your way across moRSwr infested plains, and toraugh
treacherous mountain ranges to reach the Pterodactyl's
lair.
STARGAZE R SECRETS for toe 4fll Spectrin Only IMS
The on^y serious Astrological forecaster produced forth*
4SK ZX Spectrum. Written by a professional Astrologer.!!
condenses Astrology's complex mathematics and rdaacw
mto an ea$y to use program. By entering toe subject's nana
and date, tune and place of birth, toe program quickly
interprets toe data, plots a Natal Chart and lists toe results,
under a number of categories. A program that combines the
newest art with the oldest Science.
t*
n
**
I
6?
w
.^2*»*
t,*99*9nd4K
CRAWLER for any ZX. Spectrum Only 44,99
An addictive chase game needing both reaction and
strategy. In fast machine code for arcade action
You are Crawler andyour aim m 1 ife is to hunt down and
devour as many bugs asy on can Every timeyou catch one
you grow longcr.so that you s^™ b.ave to avoid biting
yourself The more bugsyou eaL toe more difficult it
becomes. You can choosebetween 9 skill tenia
JACKPOT for the 4BR Spectrum Only £4 ,95
h complete simulator, of a popular fruit machine, usuig
definable graphics to toe fullest. It contains a complete
introduction to toe rules of its HOLD. KTTDGE. GAMBLE and
FEATURE BOX with animated demo Memory mapped reels,
simultaneous revolution, staggered stop, animated bet and
payout, payout board and realistic soundeffects recreate toe
original .A must and a wallet saver for any fruit machine
buff.
TR8THATCH for the UKSptctru Only A* f S
This is the No. 1 hit of the Summer and is a 3-D Test Mat- 1:
Cricket Simulation. Contains two programs - toe fireta full
5-day Test, the second a selection of one day matches. Each
program contains a full scoreboard and definable teams.
The game already contains England and Australia teams
m
4f
f
&■
X
V
.ft
*M
Mi
RESCUE for the48K Spectrum Only £S. 95
Ar. adienaiw game tha t needs a Special Program to detail
its Rules: VERY simply, you must find the Uap and Radio
afen-ptotyour route and monitor patrols a* they scour the
43t tocations you are ^veiling through. If you have the
^equipment you can cross into Secret Territory in
search of the C&afe Mntauung the imprisoned Princess L'
you Sod the Princess, you must stiH return to base with her.
LUDM RESCUE for in? IX Spectrum Only £4.91
A fast moving addictive program In this game you are the
pHot of a spaceship wsth orders to rescue stranded
Astronauts from the Moon's ragged surface. Sis astronauts
are relying on you to save them, butyou can only tftta one at
a time. You will have to steer your craft through
treacherous asteroid celts swrcunding the moon.
il
• -•••■■ '.•'
K3R94.
S-D QESE1T UIBOL for any ZZ Spectrum Only 4,4 95
A game of S:rategj r and reaction in 3 dimensions. You are
the commander of a tioawtSf armoured tank rumbling
towards safely. You must avoidmines and enemy tanks.
Your colour coded mine indicator wlI aid you across the
daf.gerouser.euyr fields. Once across, you are vulnerable to
enemy attack with only 50 shells available for retaliation.
&■&"
BfTh
CRL brings a whole new world of excitement right into your living
room!
Games that test your skills to the ultimate - whether it's zapping
down invaders or playing a whole game of cricket..
Only CRL offers such a wide choice of computerprograms for the
world's most popular micros.
. . , catch one today at Menzies, Boots, W. H. Smiths, Spectrum Group
and all good computer shops or send direct to CRL.
i Never has so much excitement been contained in a cassette!
BMW
■■ialHaBKSai
I^KMiHal
J.* I v * * '^•v* v I
_ I^TlB^l
E
^John Menzies
*>^a
whsmith lar^agiiMJuDl
HANDICAP GOU for the Dragon 32 Only £6.95
An 16 hole. 1 or 2 pLayer handicap game. There are Bunkers.
Se Rough. Uies, Trees, gorsebushes and gusting wind
which all cave to be taken into accountas you choose the
strength anddirecuonofyour shot The Computer decides
■Jjfler4th of the hole and its par. making sure that you
new. ETCH play the same hole twice, Watch the Dragon 52
buildup the hole in afascmating graphics routine. Pull use
of sound and Dolour.
HAJiDiCAPGOiJforanyMIBpertnmi Only 6995
Amazing, 3-D graphics on a memory mapped course, this
program has over £50 user definable graphics to produce a
startlingly realistic simulation You nave a selection of 1 5
clubs and a caddy. Each green is automatically enlarged
when putting commences The graphics have to be seen to
beMieved You'] I wish you had a swing as good as the
cartoon golfers. There's even a 19th hole.
3mNS
HEaiHLi^Lin^LV ' - '
BSK
m
CRL House, 9 Kings Yard, Carpenters Road.
LONDON E1S3HD T*k 01 833 3918
■1
They may be smiling now, but they
are about toencounter...
COMMODORE 64
BANDERSNATCH.
48K SPECTRUM
How will these four
master computer game
writers be feeling in a few
weeks time?
They have been brought together to
poo! their awesome talents to create
the two most sensational, mind 4
boggling games ever 4
imagined.,. Psyclapse
and Bandersnatch.
When such computer
wizards as (from left to
right) Ian Weatherburn,
Mike Glover, John Gibson
o ^ and Eugene Evans are
locked away for weeks on
end, anything can happen, will
they maintain their sanity, or
Kjthe name wnats m o r e to the point can
of the game V ou control your patience?
Coming soon from Imagine. ..Psyclapse and Bandersnatch...
the two most exhilarating experiences ever. Can you wait?
Imagine Software Limited, 5 Sir Thomas Street, Liverpool, Merseyside LI 6BW,
Dealer Enquiries Contact: Colin Stokes on 05 1 -236 8 1 00 (20 lines).
f I
AMAZINGLY FAST SERVICE -
YOU'VE KEPT IT UP EACH TIME
II
(R M. DELAHAY, CHELTENHAM)
SOFTWARE SUPERMARKET
At Software Supermarket we play all the ptograms we can find fat the Spectrum and the BBC moo and put | usl the best of each type into our ads and catalogues
We do not have the biggest list o( Spectrum programs ■ just the best from many different program companies, large and small lamousand just-about'to-be-famaiis We
produce no programs ourselves, so our choice is completely impartial
We quote reviews from all the magazines to help you decide (and to save you money] and we teU you d your joystick wilt work' ALL GAMES WORK WITH
KEYBOARD CONTROL. TOO We choose the best and we send them last which saves you tune hunting round the shops From over 40 coiintrres you write praising our
same-day despatch Mat] order a phone credit card orders only please You can now phone VISA or ACCESS credit card orders to us at any time, from any
country where youi own regulations allow it.
DOOMSDAY CASTLE
48K SPECTRUM ONLY
MTU If 1 L'Y FTJ" One of die greai games onSrW Sensational graphics and
TV J il l Ti l llJCl sound ' original and 100% ptayabk? Take on on you:
SuperDraani rike. jump buses and cars, watch out tor hedgehogs: as you search fa rive ghost
rider Will jMH tuid Jure? Will you beei him? Keyboard or any joystick And the moa realistic
■Hdaaqri yvuve mer, U ally all games we re as in volving as this' {Microsphere) £5 9S
THE BIRDS & THE BEERS?-.
Manic Mum ■ which is high praise Yoy are Boris Bee ealteaing necrat . but The Buds are out to
get you TJra basis, the plaits, tbe centipede, ihe bear, the wasps - they're all after you Df
course it clays the Bumble Bee' music and there are mors screens than m? have managed to
gel through The graphics are excellent Keyboard or KemjHtun'ProtelcyAGF joysticks {Bug
E596
VD A If A TO A ESCAP£ ™ M SKAKATOA is a completely amaimg
■*"^»«»^* A Vn piece of pcogiamniing Fantastic full scteen graphics
indgisgimuac Your heump^ is huge, with a giant ictoi The expksKiris from the volcano
ate very eemvmcirtg indeed. Jtrsally has ihe biggest graphics and the moa detailed scenery
we've ever seen - and it's ven, 1 pleyable A year ago it would not have been possit.^
joysticks (AUkk) £5.95 _
i ZIGGY'S SECOND
ABCADE/ACVENTlfHE
(Though i! you trussed The Pyramid' you can buy thai, too' Same price) Ziggy has to explore
99 toons d the castle to hnd and rescue the 6 elven stones All In full screen and wondeilul
graphics as you Sight the DTOS, GAfftHROGS GOOGLY BIRDS. MEUCLOIDS and QRPHACS
al with ddHeient weapons and personalities It is quite pw utM l end don't target ro send
Fnnta^ your coded hi-scores* Joysticks KmipsjDni'AGF.'Fyer^'Milnogfin/PiotpJt
PtautfESSO
Of 1^\ A D ^\ ^\ 'On* [ * the mu & interesting and enpvable games w
O U UflD W W appear" (YrComp) Rave reviews all round tor this highly
unguis gaa» Asa vwy weli animated Sea all you do ie ciy to c.imp up through a series ol
■efflemely beautifully drawn caverns wrtiue avoiding a pwHcdactyl Healtime ctock. beautiful
M-sneen animation and amaang colours No joysticks jO\iicks^vafl&%
IF AT UAT F A '100<tiaentiaxtiansand36duraciBis.aB<ifwham
W faAilXrtlll If* hive Memnt peiscnskues VaS&Ba isn't likeanylhing
else •PopCwapWklv) Valhaila a the only adventure where you can watch the animated
characters play Wt the story Join in u you wish 1 6 adventutes in one. print out graphics and
text rt ran ffien tope with y«wspelhiKi SpeJlbuybng stale qf-the-artadventuie Nojoysttclo
mSmM
'Full oi tne great Kites and ideas thai innde Pimanis such, a
triaatr ' {PopCompWldy) Find the Hidden Star- and wm
itnpto Hollywood 1 A mad adventure With lots of good tunes and same very good
awrai type animation Follow Gtauebo and the Punan aiound the USA Discover the 22 dues
■ and name the hidden star ■ and you win the trip 1 (Entries close t/&B4( A brilliant tallow-up to
Plftiania. -jsing every bit of the 46K FREE 'hit single on flipssdemay contain clues (DC
No joysticks <Ax£maUi)E\Q 00
AWT ATTA f*VTn£&>uatetKi(ntymgtytiteiii!0 bt-nw graphics
^■■™ • *• i A «k\#*fc which are among the best ive seen '
/Compi VidCames) The most arnaiing 3D anunaticn we've seen latety. with taw teviews all
round The 3D e so involving its bang patemed :2com:nandkeysandagametotmpressyour
mends as you defssi rh* Crcy ol the Anis No joyshcka (QadBtlr*) £6 K
llullllv 1VAA1H£|A ..ouniry and deservedly so superb '
iPenCompGemes.- "One of tfte besi ga/nes !'ve seen " (P&sCampTodar) Based on the US A
arcade chart-topper Muiei 2049et Superb graphics and sound as you search thro 20 sejieens -
each one a ddtereni arcade game 20-saeen demo Kempstti^i loysticks The best Specu urn
game in thewosM {Software Concepts) £5 %
HALLS OF THE THINGS ^^
innovanvr^ne ! haw seen Sortie Spectrum " (ZVCompj 1 Explore an B-siorey mase find
treasures, avoid nasties BUT, this time, you can SEE enaoly where yea are and what you re
dang as the maze scrolls as fast as you can move Brilliant graphics (rry (waning your sworci
about 'i and !9 command Jieys No joysticks (Crystal) £7 50
MIPA ¥ A ¥T 'Excuileni graphics are used ro mate a wery jnpte&tve
A \J VvlAJj display indeed highly iscommonded " &Qmp)Tt&
bs« conuxnet version c< the (amous game we've ei'er seen From 2 k> 5 players (induditvg the
Spsarumatlast 1 it's ruthless, but honest ) Every original feature is (aitbtully reproduced and
the screen display is miraculous f*J (oyfflcks (Autonwa) E6 00
GROUCHO
16/48K SPECTRUM
■V SAU A XVT1AAV ViniYlCl ihoughl-oumndfullolicuit)
absorbing and amusing "fS User) Run your own tailway 1 Chan ge the pom (s lo avoid crashes
watch out (or hi|ackmgs by uate passengers Full -screen gtaphics 30 command keys 2uack
layouts 7 sM levels. Hsub-Javefai Demo mode andPsuse while yog goon strike Very catching
hofcby < No joysticks. Microsphere! £5 95
Dlf PlTHJTTf 'TjfuspfogjainJiflsev^fytning superb presentation, graplucf
* JnijXliill 1A andsound HrgMyreoommenrkd ' tHameCompWkty)TtmtlM
arcade-action 5 screens in the best -ever Spectrum 'Phoenix 5 stall levels choice ol character
sets demo mode crams 4BK quality into ]6K KempattKi-'AGFjoysticlcs (Megadodo)€hqu
m nftll U nlVl .^'ei*sj Take your Red Racer ifull-saaw gtaphlcsi all over
tiie USA rwtd the deadly Black turbos and coftect the -Gold Cups Flaying area is 600 TIMES
YOUP. SCREEN SIZF'Rwuhmecfock accurate speeos KrntroUedaccelefaiicfl amazing Ni^ht
Driver phase Kempso^iGmckshotTnga joysticks njJnm*w;£fcB0
1J 1 D jf\ f f* XT' ^ ne SSn,e s wpetb iZXCompl 'Unreservedly tecammeatod
■■ A»%*%*\* X « stunning display '' fcomeCoinpWk/yfTrm Fi<x}qei jbJeu^k
ahead of iberesi 1 [flads in 2 parts lnsttuctions and keyboard demo nist thee rhe game whsoh
■uses so much memoty you have to unpjug your printet The classic game in its v«y hew form
Kempston/Quickshat joysticks fDJ£J£5 96
CALL 01-789 8546 (24 hours)
CHARGE PROGRAMS
TO VISA/ACCESS
To: SOFTWARE SUFEHMAMET. 87 Hovvdf Lut Laadan SW1S 6JfU
U you do not want to cut this magajjne write your order out carefully on plain paper
and quote this number 8U1S
I own a KcomputeTwhichisaSPECmMvBBCIendoseac^
payable to Software Suparmarker Oft Charge my VISA'AOCESS'EirflOCARD'
MA5TESCAHD number
If
J
Signature
Please wnle clearly Ef we can t read it you won t get i?
Name
Address
Posto dj
Phone ifany, mease oi query
PTOGHAM NAME
I'r:. .
:
L
POSTAGE
AND
fACKirra
r,i |.r| 1 If
: ' : :
E'JfiOPE AdiiiplorfiCf. proquir.
£
□WTStKEUlOfl Addlllarcut fnxiumtiiir^
j
RrrsmE EUBWE ADD E : TO TOTAi T riT a I
FOB RETFimrj MAIL TOTAL
i
SINCLAIR USER frbmary 1984
25
Gilbert factor
under fire
MY SUGGESTION for the
improvement of the Software
Directory is to employ John
Gilbert full-time, since of 207
items only 75 have been
"Gilberted". Of 27 edu-
cational cassettes none has
been assessed — surely a
gross omission — and of 14
business only five have been
tested.
Ian Fletcher,
Freshwater, loW.
%John Gilbert assures readers
that he works full-lime for Sin-
clair User, but prims out that
he zsould need to be employed
24 hours a day to review every-
thing he receives. He will en-
deavour t however, to assess as
many packages as possible. All
educational and business soft-
ware will be given Gilbert Fac-
tors eventually.
TV cabinet is
deceptive
I WOULD like to warn fel-
low readers. I have owned a
48K Spectrum for six months
and found it an excellent ma-
chine. Recently I changed my
TV set, selecting a 16in.
Elect ra colour portable. I was
particularly careful in avoid-
ing some Japanese sets,
1 found j however, that
after about two to two-and-a-
half hours' use I lose all col-
our. On investigation I have
found that the Electra case
contains a Hitachi set which
is not compatible with the
Spectrum.
Any Spectrum owner plan-
ning to buy a new TV would
be well-advised to check the
make, as well as the name on
the cabinet.
G F Knight,
Newport, IoW.
Bridge needs
improvements
[ BOUGHT a copy of Bridge
Player from CP Software as
advertised in your magazine.
While the bridge is not too
bad, I was disappointed with
the juvenile games- type ap-
proach to the presentation of
the program.
May I make a few points to
CP and to other program-
mers who may see bridge as
an area worth exploitation?
Bridge is, in general, a game
which is taken seriously by
numerate, logical adults of at
least averaigc intelligence who
are usually addicted to the
game. I mention that because
unless one knows the players
one cannot cater for their
needs. 1 would suggest that
i heir needs do not include
flashy Horizon-type titles;
games-type jingles when a
game is won or lost; arcade-
type flashing scores at £1 a
point — and a jingle when a
rubber is won; a message to
the player that he has missed
his chance when passing on
an unbiddable hand — very
annoying; ridiculous bids
from the computer, particu-
larly when looking for a slam.
The display or the hands,
the bidding, the table and
information are adequate and
it is easy to play the cards,
but may I suggest that atten-
tion be given to removing the
arcade flash and using the
capacity released to improve
the game, particularly the
computer bidding, and to
speed the shuffle and deal?
J W Evans,
Southampton.
Amazing new
command
MAY 1 congratulate you on
the creation of an amazing
new command for the ZX-8I .
It is n SLAVE w . If you look
in issue number 20, Novem-
ber 1983 on page 26 under
the heading Speeding Com-
mand, you will see what I
mean. Also, I was pleased to
see that you have increased
the size of your magazine to
1.64 pages. Unfortunately the
extra pages seem to be used
by more advertisements.
Never mind, it is still one of
the best Sinclair magazines.
Guy Fullalove,
Meopham, Kent.
% The 'new command 1 was, of
course, a punting error and
should have read SA VR.
Identifying the
tape version
READERS may be interested
in a very useful device I have
been employing recently in
my programming. I use a
Spectrum 48 K. I always set
my auto-run at the same line
number. I use 9950, then the
usual SAVE " name " LINE
L I have now added: 9980
PRINT 48000 - (65536-
USR 7962) to the end of any
complex program on which I
am working.
If, like me, readers employ
more than one cassette to up-
date their programs, they will
find that whenever the pro-
gram is SAVEd the number
of bytes used will be printed
at the same time as the OK,
9980: 1 which appears on line
22.
That number added to the
cassette clearly identifies
which version one h examin-
ing. Of course, for the 16K
Spectrum, use PRINT
16000.
Charles Buzzard,
Chorleywood,
Herts.
Frustration of
Manic Miner
ALMOST two months after
purchasing Manic Miner for
the 48K Spectrum I complet-
ed the 20 lethal caverns.
Since then I have achieved a
high score of 35,185 which
took just over an hour.
Manic Miner can be one of
the most frustrating games
when you make stupid mis-
takes, so 1 have written a
method of POKEing in a
number to allow you to 'die 7
without losing any 'men'.
First break the program
after loading the basic loader
— when the screen turns
black — and then type-in
'PAPER V, followed by 35
POKE 35136,0; and RUN;
then restart the tape.
Simon Scott,
BaiJdon,
Yorkshire.
26
SINCLAIR USER February 1984
^™
Letters j=
Functions not
in manual
I WAS INTERESTED in
John Armfidd's article Dis-
play in the November issue
and got out my Spectrum to
educate myself. 1 found I
could do things with INPUT
statements which are not
mentioned in the manual nor
included in any programs I
have entered from magazines,
I was trying to write a user-
friendly program to input
data and produced the follow-
ing:
10 DIM a (5)
20 FOR i . = 1 to 5
30 INPUT "Number";
INT ij w »" ia(i)
40 NEXT i
I wanted to print the sub-
script number of the array a
which was to be input and
found thai ABS i or VAL
STR S i would also work.
If the function & are omit-
ted, the Spectrum expects
two inputs, the first being i.
If i is input continually in The
range I to 4, then the loop
will also continue from that i.
Readers may be interested
to investigate what other
functions and combinations
of functions will also work. I
expect some can put a USR
call To good efFect.
Finally, I would just like to
say what an excellent ma-
chine the Spectrum is. I have
had it for six months and can
scarcely keep off it. I think
there is nothing wrong with
the keyboard and the method
of keyword entry is a definite
boon. 1 think it is better to
play arcade-style games on
than both a proper keyboard
and joysticks-
Brian Cook,
Rainham, Essex.
Speed routine
investigated
HAVING READ Edward
Wright's letter concerning
the POKE which speeds the
operation of commands on
the I6K ZX-81, I decided to
investigate
; r Type-in this
short mac
hine code routine:
1 POKE
18000,33
2 POKE
18001,11
I POKE
18002,0
4 POKE
18003,57
5 POKE
18004,68
6 POKE
18005,77
7 POKE
18006,201
8 PRINT (USR( 18000)-
16373)/! 024; "K"
If you run it, vou will find
that <3K
appears on the
screen.
Wright's POKE
makes 13K of RAM disap-
pear.
John Dyer,
Blackburn,
Lanes.
bugs — that and my inexperi-
ence with The Spectrum,
Although Watkins could
have had faulty computers I
cannot help wondering
whether, like myself, he had
not read the Spectrum man-
ual thoroughly in the first
place.
G Nttnn,
Wisbech, Cambs.
Human error
to blame
I FEEL I must reply to
Christopher Watkins 1 letter
in the November issue of Sin-
clair User.
I bought my 16K Spec-
trum about three months ago
and when I first tried to load
programs from the manual I
could not get them to run
properly. After a week of per-
severance and re-reading ev-
erything in the manuals 1
began to make progress until
I now have a great working
relationship with it.
In the beginning it was my
human errors causing the
Bugs permit
high scores
I AM WRITING to tell you
about bugs in two programs,
jet-Pac and Spectres. If on
Jet-Pac you manage to reach
the fourth screen — the
plane-like aliens — and then
stand on the middle platform,
the aliens will not be able to
get to you and when they
crash into the platforms you
still score points. This bug
allows the player to amass an
enormous score without get-
Ting hit by an alien.
When playing Spectres
you get one extra man every
3,000 points but if you reach
12,000 points the space at the
top of the screen where the
number of the men remain-
ing is usually shown fills up
with little dots. When that
happens you seem to have an
endless number of men.
When I reached that point 1
left the game playing and no-
ticed that every time a ghost
got a man and took him to its
den, the space where the
number of men left is usually
shown did not change.
I watched the game play
for another 10 minutes but it
never ended. This bug allows
the player to move round the
maze, taking no notice of the
ghosts and, like Jet-Pac, to
amass a very big score. It is
impossible to start a new
game without pulling out the
power plug and loading the
game again.
I think the Mind Games
article is very interesting and
would be very pleased if
Quentin Heath would review
Planet of Death by Artie
Computing.
Andrew Horsfield,
Rotherham, Yorkshire.
% Quentin Heath hopes to fv-
viem Planet of Death in the
near future.
Not just another edition
I AM an old age pensioner
and feel I must write to say
how incensed I am at being
conned' out of £1.95- t
bought the Second Sinclair
User Annual as a surprise for
my grandson who has a Spec-
trum 48K,
He tells me that it is a
summary of The monthly
magazines which he has de-
livered from our newsagent.
It would be advisable if,
when printing this magazine.
you would state that the con-
tents are just another edition
of your monthly publica-
tions.
B Da vies,
Maesteg,
Glamorgan.
• We are sorry that you feel
cheated but we would like to
stress that it is more than a re-
hash of material published pre-
viously* The News Section, the
Software Review, the Hard-
ware World round-up and the
Booh Review were all written
especially for the Annual. In
addition, there are two com-
pletely new programs.
Though compiled with the
new reader in mind, the Annu-
al nevertheless is a comprehen-
sive review of the last year and,
as such, it a useful and inex-
pensive addition to any Sin-
clair user's library.
More letters on page 28.
SINCLAIR USER Fibrmry 1984
21
i
Letters
Too many advertisements
I HAVE only one criticism of
your excellent magazine and
that is the large amount of
advertisements compared to
the number of articles. In the
November issue there were
107 pages of advertisements
and only 57 pages of articles.
I think it unfair to boast
that there are "164 fact -filled
pages" when the majority are
advertisements or space- wast-
ing illustrations Ii would be
in everyone's interests if each
advert isement were shown
every two or three months on
a rota basis or even if you
produced a separate maga-
zine, Simon Stone,'
Leeds.
• To produce a large colourful
monthly magazine with only
limited advertising would be
extremely difficult and not par-
ticularly desirable, as many
readers find the advertisements
useful and informative.
As tfo amount of advents-
ing has increased, so has the
amount of editorial matter,
which means there is much
more editorial content than
previously.
Getting rid of
an offending
screech
WHEN I was reading some
of the letters in the Septem-
ber edition I saw one which
told one how to get a magenta
and blue border with an irri-
tating screech. It also asked if
anybody knew how to get rid
of offending screech,
I tested it on my Spectrum
and found that by typing-in
RAND USR 1327 the
screech would be eliminated.
I also found that if one types-
in RAND USR 1234 it pro-
duces a yellow and blue
border with a noise similar to
that of loading a program.
Anthony McKenna,
Stockport,
Cheshire.
nte your own mac
achinc code adventures
Without any knowledge of machine code whatsoever
THEQilLL u a majur nrw ultlil-v ^Mlttn in machine (Ode whiih jthiwi rvm ihr
ni.jMi.f- iHtiBtamme r tn prculurc hieh-jppra mjtnmr ^imjf auvCTfturci in HiJMflH
tjuality [u nunv available at the moment witlutuf ..n v lui(n*l«isy tit nut-hint- .. . . I .
whatsoever,
Uling a menu irlrtiiun lyilCffl Vtlu may ■ real? well nvrr MM HXatwnx, tJfsrrihr
mrm and L'urwn>1 fOUt^t nerwe^n thrni. I lpu may Inrn tilJ llrrm wild LMi|i.-t».i ■mil
pnnhlrnu nl your inditr. flaying rcHol vi ml .Mlkfnlunr you may ailt'r and <*i|]rri-
:mrn1 villi an* lection with (he jrpateji (it fair . A |]art IornMTtt aJvrlilure nlay he
uvrJ to taw lur laiir L-tnn|] luiun When yon nave June wJtti.yVli.t. witl jIIi"*
yu4i lu pruJuCe a Copy <t| ycsMf advwitunr- wnU4i wklJ run muepiiitimlly til the main
QUI.}, «Jii<ir. lu thai run may CrM CHal j«»V ■■.' VOUT InenJjS.
THEQL1LL u provided with a JrtaiifJ tuturiai manual wliii-h hivh r.i nrrV jiiXVt til
n> u*r In wnlini aJvrnlunri. ft u iltii»OMi!>le to drfc-rirw alt ihr IralurtM <il Itiu
amanntf program in SUCrt a irnall .iparr *ti we riayrr prtHiiited a drmanatealtioni CiiUCtte
wkick give-* tiirthrr inliirraaluin and an r»am|i|<* ill it* .i±i-.
Tku Jcmfj-taiwflc Ls- >v»iLh]t- *t £2.00. an J THE QUILL \nAi at £14.95.
FOR THE 48K SPECTRUM AT £14.^?
NOW AVAILABLE FROM W. H. SMITH ar=
Our Software is now available from many computer shops
nationwide, or direct from us by post or telephone.
SAF for full details of our range
Dealer enquires welt-iimi;.
(.II.SOFT
3(1 Hawlhorn FNiad
Barry
South Glamorgan
CF68LE
<Bl«44«)7J6.W
in i I'Hosi voi'hiikui h
WITH
Hal- . .njrt;
2B
i mill ( ltd Otikri
manned 2-1 tin.
SINCLAIR USER / ; ,*Tuary 1364
Choosing which game to buy from the mountain available is a difficult job,
especially when everyone claims to produce the best on the market. But how can
you tell the best from the rest?. To help you decide, read on
THE DUNGEON MASTER
Let your Spectrum be your guide in a totally ntjw
dimension in adventures in the true spirit of
traditional role playing games where YOU design
the scenario.
"I have been a Dungeons and Dragons Ian for
several years ...The package provides excellent
entertainment »or all rans of the cults and should
prove a good introduction to the game".
....Sinclair User,
"Highly recommended for its versa I ity r originality
and quality. Defmately well* worth obtaining"
...ZK Computing.
ZX Spectrum 48 K £7,50
Written by Graham Stafford
INVASION OF THE
BODY SNATCHAS!
At nasi 1 a vars-on as fast and furious and as
frusl rating iy addictive as the arcade original.
La nde rs, V u lants. Bombers, Pods. Swarm e r* and
much much more combine to produce the
ultimate space game!
ZX Spectrum 48 K £6. 50
Written by Simon Brattel and Neil Mottershead
Please send SAE tor our Fa test catalogue and
details of our forthcoming software.
Calalogua FREE with every order. PSP Included-
Piease add £ D.&Q per item for overseas orders.
Please make cheo.ues/PO's payable lo:
CRYSTAL COMPUTING
Dep< sua
2 ASHTON WAY
EAST HERRiMGTON
SUNDERLAND SR3 3RX
i^H
What the
real critics say. . . .
Very farely have
software titles produced
such universal acclaim
as 'Halls of the Things'
and The Dungeon
Master 1 . Now, with three
brand new programs,
Crystal continues to set
the standard of software
excellence The
difference is obvious -
the choice is yours:
The Best or The Rest.
MP*
u
\
THE ISLAND
The ultimate test of logic and deduction 1 C&nyOu
solve the hidden mysteries of the South Pacific
Island on which you have been stranded - and
escape alive! A brilliant classic style adventure
game to facmate and frustrate you for months!
ZX Spectrum 48K CT.50
Written by Martin H.-^mith.
Please Supply:
Invasion of the Body Snatchas D
Rommel's Revenge u The Island C
Hails of the Things U The Dungeon Master □
Catalogue (please enclose SAE Ein. % Sin.) D
I enclose cheque/PO tor.
NAME.....
HALLS OF THE THINGS
A stunning multi-level maze 'arcade ■ adventure'
'Excellent and dangerously addictive - could
change the Spectrum games scene
overnight", ....Sinclair User.
"Spectacular - One ol the best games I've seen,
finely balanced between simplicity and
addiclivenBss - superb graphics and colour - I
CANT RECOMMEND IT HIGHLY ENOUGH"
. Popular Com puling Weekly
ZX Spectrum 4SK £7.50
Written by Neil M otters head. Simon Bralteland
Martin Horsiey-
ROMMEL'S REVENGE
A brilliant interpretation of the most visually
stunning arcade game ol all time Superb high
resolution 3D graphics with full perspective plus
a host of new and exciting features make
Rommel's Revenge the most spectacular game
ever produced for your Spec! rum?
ZX Spectrum 48K ZB 50
Written by Martin Horsiey-
DEALERS! For det*il« of pur excellent
dealer discounts (Including exportl
ring Chris Clarke on 061 205 6803.
PROGRAMMERS' Written any good
software? send it to us for evaluation end
details of our excellent royalty scheme.
Devils of the Deep
Discover the secrets of Atlantis as you
wander amongst its ancient columns
Explore the 1 00 deadly sectors of its
treacherous seabed! Beware of giant
eels i £fr.50
CREDIT CARD HOTLINE
06286 63531 (24 HOURS)
^_^
HSYLVANI
navigate your way through 500 3-D roc
survive the swooping vampire bats reac
terrifying top . confront and kill Count Kreepte,
ridding the world of this Transyfvanian Terror
Can you survive the Top of The Tower } £6.50
RICHARD SHEPHERD
SOFTWARE
Selected titles available from
W. H. SMITH, BOOTS, MENZIES
AND ALL LEADING COMPUTER STORES
super spy
Follow the trail of Dr Death tfi rough
complex puzzles, coded messages and
3-D mazes until you find his iair! But
beware even with your death -
defying gadgets you may not live to tell
the tale* 16. SO
SOFTWARE
ELM HOUSE. 23-25 ELMSHOTT LANE. CIPPENHAM. SLOUGH. BERKSHIRE.
RICHARD SHEPHERD
AH tyogr*tii ,irr h*JhjDi«I (a [rv camMion lijr irwv m *y "01. Dy way of rradp or affwrwis* tw lent, Trpd out rjvald or ot*ifwue c imui Jt*d wi[*ioui tfr *"Rpr pfnrnisjan la Bicn#dy<tW4
URE
IMAGINA
Selected titles available from
W. H. SMITH, BOOTS, MEN2IES
AND ALL LEADING COMPUTER STORES
le quest to find ]'he
^en Parchments of Xaro and their meaning f Will
they lead you to undreamt of treasures or eternal
doom? Explore the mysteries of the stockade and
puzzfe within the Pa goda'A spectacular split
screen graphic and text adventure to brain tease
you for weeks'
Adventurous graphics for every loca
Save routine £6.50
RICHARD SHEPHERD
CREDIT CARD HOTLINE
06286 63531 (24 HOURS)
RICHARD-SHEPHERD
SOFTWARE
Ship of the Line
Command a sailing ship juggle your
supplies, crew and firepower Fearlessly
battle your way up the admiralty ladder.
bribe Sea Lords as necessary until you
make First Sea Lord! £6.50
Mi
VERE
SCENT
RICHARD SHEPHERD
Everest Ascent
Conquer the world's highest peak in
defiance of all the obstacles, man and
nature can throw at you Survfve
avalanches, cross bottomless crevasses,
cope with wayward Sherpas — but
don t run out of supplies! £6.50
ELM HOUSE, 23-25 ELMSHOfT LANE, CJPPENHAM SLOUGH. BERKSHIRE.
All fnotjrjffls dwp sotcf TubjKt to ttie condition thjt thry may not. by way Of If** & «r*ftw». B* *eri[. lw«J oui. r«eld or otilWVviK titti
trr\ pwfm«5icn or R<r\ttQ %tiepfwe
Spectrum
^■■^^■H^H
■■
a
-<teE»
3K4K&
Mrcffl&M^
■■".■.-..■-
»
A brand new original all
scrolling super colour
animated tuneful
_ multipicture
J puzzle program
A masterpiece of ingenuity
to keep the whole family
amused absorbed and
enthralled until the next blue moon.
A puzzle for a\\ puzzle haters!
You'll be amazed as picture after picture
unfolds as reward for your skill,
patience and luck.
You'll be staggered by the
number of pictures shoe-horned
into Spectrum, but you'll never
know how many until Jumbly
itself tells you and
rewards your efforts
with the Jumbly Code.
4 4 4 4 4 4 4 4 4 <J
■ill LET
4_4_4 AjjAA 4. :
COMPETITION
The Jumbly Code entitles
you to enter the JurnWy
Competition to design a
picture for Jumbly i\, due out in J 984
Winners will receive over El 50 and
have their design and name included in
the new program.
£6.95 + SOp p&p
Available from BOOTS. W,H. SMITH, LASKY S, SPECTRUM. JOHN MEN2ESHI
good computer software tttxkftU throughout the UK of direct foe
only E6.95 + SOp post and pack Ing.
-4
J
-A
,444444 4 .4 4
rlffefjn Ǥ ML jtt tUik
I fettL Lhe INSET ii « vita!
" rTTRE I
1 « t j 1 < < < 4 < < «« < ^ 4 4 4 4 t 4 4
DK Tronic* Ltd., Unit 6, Shire Hill Industrial Estate, Saffron
Walden, Essex CB1 1 3AQ. Teh f0799J 26350 (24 hrs) 5 Lines
JUMBLV 46K Spectrum (Joystick compatMt'e
Hardware World =
Introduction
to control
applications
THE NEW I/O port from
Muhitron gives the Spectrum
a means of communicating
with the outside world,
ng ihe pen ii could con-
trol motors, turn lights on
and off, or detect when a
h has been closed. It
transfers signals to and from
[he outside in a form the
CPU can understand.
" the technically- minded
it is an uncased PCB with
through connector based on
the Intel 8255 AP-5 chip.
The chip has three 8-bit ports
- A, B and C — and a
control register (D), the ad-
dresses being 31, 63, 95 and
127 respectively. Each port
can be set to either input or
can pur with the upper and
lower nibbles of port C capa-
ble of being set independent-
ly to either. Two more modes
of operation are available,
which allow strobed I/O with
handshaking and strobed bi-
directional operation; in both
cases the data can be latched.
Details are given in the user
manual supplied
Connections to the board
are either by a 28-way Spec-
trum-style edge connector or
soldercon pins — breadboard
style. The manual gives com-
prehensive details of how the
port works and how to set it
up. It also includes two brief
programs, one to make the
port test itself and one to
show binary numbers being
output to LEDs.
One thing it does not do is
to give simple circuit dia-
grams to show how to con-
nect a LED or perhaps a
relay.
At a very reasonable
£13.50 plus 35 pence p&p,
iiieluding manual, it provides
a cheap introduction to con-
trol applications.
The board is available
from Multitron, 5 Milton
Close, Headless Cross, Red-
diich, Worcs. R97 5BQ, Tel:
0527 44785.
Computer case which
is worth considering
FROM ROTRONICS there
is a range of computer cases,
suitable for the ZX-81, Spec-
trum and other computers —
Vic-20, Commodore 64 and
Oric. The basic case
measures 695mm. x 360mm.
x 140mm. overall and 'fori-^
tains a p re-cut, brushed nylon
foam insert in the base to
hold the computer } power
supply, tape deck, Sinclair
printer, paper and cassettes.
The top has a cut-out for the
manual and a knife is includ-
ed to make any further modi-
fications.
Uncut foam bases can also
be supplied for users to custo-
mise their own cases. The
case is lockable and when in
use the top is removable to
allow the base to be used as a
works I at ion.
As the computer cut-out is
designed for the computer
alone, peripheral owners are
presented with a problem.
ZX-81 owners with a RAM
pack, or similar, will need to
make a cut-out in the top
foam to accommodate it.
Spectrum owners may also
experience problems, not
Useful stop to mains
power problems
AT ONE TIME or another
many users, especially ZX-S1
owners, must have exper-
ienced a computer crash
when a nearby mains appli-
ance was turned on or off
The Powercieaner from B &
R Electrical should prevent
that happening. It works by
limiting any surges caused by
sudden switching to a peak of
625V, almost instantaneous-
The Powercieaner looks
like an ordinary mains plug
titted with a 5amp fuse with
an over-large back which con-
tains the electronics. When a
spike in the power supply
occurs the Powercieaner cuts
in to smooth the voltage with-
out interrupting the supply
to the computer.
If you are experiencing
mains problems, the Power-
cleaner might be a useful ad-
dition. B & R Electrical is at
Temple Fields, Harlow, Es-
se*. CM20 2RG. Tel: 0279
443351.
only with devices plugged
into the edge connector but
to fit them into the case the
tape deck needs to be re-
positioned to the right of the
computer, the printer behind
and the power supply to the
back left. That will allow two
drives to be put alongside the
computer; if a suitable lead
could be obtained, there is
space for another iwo behind
them. Those modifications
can be made easily using the
knife supplied but planning
and care are required. If your
computer normally becomes
hot in use it may also be
necessary to enlarge the ven-
tilation slot.
The front and back i
the case are made of extruded
aluminium and the end faces
of black plastic which, while
not the Strongest materials
available, are sufficient for its
designed use. Its only disad-
vantages are the top and bot-
tom panels which appear to
be made of laminated pressed
cardboard and would be little
more than showerproof
At £36.99 for the case,
with choice of insert and ex-
tra inserts at £5.95 the case is
worth considering.
Available from SMT,
Freepost, Greens Norton,
Towcester, Northampton-
shire NN 12 SBR.
Mirre hardware on page 34,
I AIR L'SER February 1984
»
Standing in for the
Sinclair printer
DEAN ELECTRONICS has
announced the introduction
of a Sinclair-compatible ther-
mal printer, the Alph acorn
32. It is manufactured by the
American company which
produces the Timex-Sinclair
2040 printer — reviewed in
the July Sinclair User. The
printer is very different from
the U.K. Sinclair printer in
both external appearance and
print quality but is designed
to be just as easy to use. It
plugs into the rear connector
of either a ZX-81 or Spec-
trum and will accept the stan-
dard commands of LPRINT,
LLIST and COPY.
That means it can be used
in exactly the same manner as
the Sinclair, without alter-
ation to existing software.
Using 1 10mm. wide white
thermal paper, it produces a
very readable output at a
speed of roughly two lines
per second.
The printer casing is ap-
proximately 195 x 140 x
^rara., black-moulded ABS,
with a perspcx blister on top
which holds the paper. Two
thick wires emerge from the
back, one about 150mm. long
to the edge connector which
has a ZX-81 -size connector to
the computer and a through
Joystick with extra touch
INTRODUCTION of a
joystick interface to the Spec-
trum market pass.es almost
unnoticed these days. To
have any hope of selling, the
interface must not only be
staLe-of-the-art but also have
that something extra. The
new programmable joystick
interface from Fox Elec-
tronics is such a device.
It plugs into the rear con-
nector or the Spectrum and
has a through connector for
other add-ons. On the right-
hand side of the case is a
standard Atari-type 9-pin
socket for the joystick and
one switch.
To use the interface all you
have to do is put up the
switch, which then displays a
menu on the screen. You
then have the option of creat-
ing a new key set from any of
the 40 keys, including the
shift keys and ENTER, or
selecting, with a single key-
stroke, one of the 16 sets
already created.
Pressing the E key exits to
Basic ready to load the game
and programs the joystick. If
necessary, the key sets can be
saved on tape. Leaving the
switch down makes the Spec-
trum ignore the interface.
On putting up the switch
the interlace pages-out the
Spectrum ROM and jumps
to the program held in its
RAM. The program then
transfers itself into the Spec-
trum RAM, pages the ROM
back in, and puts the menu
on the screen. On pressing
the E key the program trans-
fers itself back into its own
RAM, sets up the joystick
and clears the Spectrum
memory. Any new key sets
created are therefore saved in
the process.
All that is very clever and
provides the easiest interface
on the market to use.
At £28.50 the interface is
very good value from Fox
Electronics Ltd., 141, Abbey
Road, Basingstoke, Hamp-
shire RG2 1 9ED.
port for RAM packs and the
other to the supplied external
power supply by way or a
male 3.5mm. jack plug.
Inside the printer there is a
minimum of electronics, a
ROM chip to handle the
printer operations, five chips
to control the priming mech-
anism, a handful of discrete
components and two PCB-
mounted switches to turn the
primer on and off and to
advance the paper; the use of
both switches together per-
forms a self-test function,
The bulk of the space is
taken up with a very solid-
looking, rubber-mounted,
printer mechanism. The
mechanism contains, to one
side, a 15V motor which,
through a series of nylon
gears, turns the rubber platen
which feeds the paper
through and also moves the
printhead.
The primhead is made of a
ceramic material into which
are inlaid 20 wires. As they
are moved across the paper
they burn off the top surface
of the paper to leave a black
ink impression.
Each wire covers two char-
acter squares in a zig-zag
fashion which shows up the
only disadvantage of the
printer. When producing a
copy this zig-zag is noticeable
on any solid blocks of ink.
The printer becomes warm
in use but that is not a prob-
lem as there are adequate
vertLilation slots on the top
and bottom and a large heat-
sink inside.
One slight problem, how-
ever, is that on a Spectrum
the edge connector lead fouls
the power lead, making inser-
tion difficult.
Priced at £59.95, including
power supply and one roll of
paper, with extra rolls of
paper at only £1, the printer
must be seen as a viable alter-
native to the Sinclair printer.
The Alphacom 32 is ob-
tainable from Dean Elec-
tronics Ltd, Glendale Park,
Fern bank Road, Ascot, Berk-
shire SL5 8JB and branches
of W H Smith,
34
SFNCI.ArR USF.R February IBM
Backpack
could do
better job
A NEW IDEA from Kcl-
wood Computer Cases is the
range of Backpacks for the
Spectrum and ZX-8L They
have a range of facilities from
a simple LOAD/SAVE-ON/
OFF switching device to one
which also includes a sound
amplifier and a mains distri-
bution board. Also from K.el-
wood is the Microstation, a
large tray on which can be
placed a computer, tape deck
and choice of Backpack.
Overall, Backpack One
does the job it was designed
to do but the job could have
been done far better. The
LOAD/SAVE switch merely
switches the EAR signal line
and could induce an earth
loop, a common problem on
the ZX-81; it is also a mains
switch and is therefore not
really suitable.
The sound board contains
a 1W audio amplifier chip,
thi LM380K. It also con-
tains, among other things,
three Mullard 'liquorice-all-
sonV capacitors which al-
though they do the job are
about 20 times too big.
The volume control is a
LM logarithmic potentiom-
eter which, apart from being
too highly-rated, is wired in-
correctly and so the volume
needs to be turned up to
about two-thirds before any-
thing is heard; it then needs
fine adjustment.
Finally the overall solder-
ing can have a number of dry
joints, which leads to oxidisa-
tion and bad connections.
The Microstation is a met-
al tray approx 445mm. x
435mm. to which five rubber
feet have been riveted.
Backpack One seems over-
priced at £27.50, as does the
Microstation at £7,50. The
full range can be obtained
from Kelwood Computer
Cases, Downs Row, Moor-
gate, Rotherham S60 2HD.
Tel: 0709 63242.
Clip-on joystick helps
to zap the aliens
AN ORIGINAL joystick
from Grant Designs Ltd, the
Spectrum-Stick, clips on to
the Spectrum keyboard above
the cursor keys 5, 6, 7, and 8
pad presses them mechanical-
ly in response to the move-
ment of the joystick.
Inside the Spectrum-Stick
are two frames which move
independently up/down and
left/right. To them are at-
tached ramps which push
down little feet on to the
relevant keys. Despite its in-
genious design there are two
things to bear in mind. First,
the joystick will work only on
games which can be confi-
gured to use the cursor keys
and, second, being made en-
tirely of plastic, it is not so
strong as some other joys-
ticks.
Priced at only £9.95, it is
far cheaper than anything
else on the market and, pro-
vided it is used with restraint,
will help zap many an alien.
Grant Design, Bank
House, Reepham, Norwich,
Norfolk NRIO AJL Tel:
0603 870852.
Overlay for small fingers
FROM Canada there is yet
another ZX-31 keyboard add-
on, the Contact Lens from
Warren Imports. It is a clear
plastic keyboard overlay with
wedge-shaped holes which
correspond to the key posi-
tions.
The idea is that the holes
will help position your fin-
gers and enable you to type
faster with fewer mistakes, tn
practice, it ensures that your
finger hits the centre of the
key but the holes are on the
small side and only your nails
can touch the key.
Also the plastic covers the
legends around the keys, mak-
ing them difficult to read.
The Contact Lens may be
of some use to young children
who have difficulty with the
ZX-81 keyboard. To obtain
one, write to Warren Import
Group, 81, Brookmill Blvd,
Unit 80, Agincourt, Ontario
MJW 2L5 t Canada, enclos-
ing $7.05.
SINCLAIR USER February /&?■/
35
Flexibility for
Spectrum
56-way I.D.C, corrector and ribbon cable
assembly, designed and manufactured by
Varelco in conjunction with C.P.S. Ltd., to fit the
Sinclair Spectrum computer.
Available in both single and double end format.
Also available, paddle board to convert female
connector to male plug format.
Please send me the following:
6* grey cable with
connector each end
9" grey cable with
connector each end
9" colour coded cable
with one connector
12" colour coded cable
with one connector
Connector only
Paddle board for conversion
to male plug format
Pnces include VAT and Post & Packing
f enclose cheque/ PO value £
Block capitals please
Name
Address .
inwn Quantity
MM
£8.99
each
£9.49
each
£599
each
£6.49
each
£4,95
each
£1,99
each
County
Town
Post Code
SUO«4
I! paying fcy Acce^A. tfnlfjr iiiirn&ftt flHfft
DDDD DDDD ME GDDD
Available from;
Hawnt Bectronics Limited
Firewood Road, Garretts Green ..Birmingham B33 OTQ
Reg. in England Hn 3O680B
SPECTRUM
SOUND SYNTHESISER PLUS
DUAL I/O PORTS
♦ Comes fully assembled, tested and guaranteed.
♦ Supplied with very comprehensive documentation,
with demonstration and utility programmes on tape,
♦ Uses the more powerful AY 3 8910 chip, unlike
most other sound add-ons.
♦ Gives 3 channels of sound with envelope control
for special effects.
♦ lias own integral amplifier and speaker and can be
used to amplify the spectrum sound.
♦ 2 I/O port, which can be used to interface joysticks,
printer, etc,
♦ Plugs straight into the back of your spectrum. No
wiring or soldering,
CAN BE USED WITH BOTH
16K&48K.
ONLY C2& + 80p (P & P>
Send cheque or postal order to: —
Sign point Ltd,,
166a Glynn Road.
London E. 5-
TeL 01-9&6 8137,
[P©@[L§^0K]K][i[ft
THE ULTIMATE POOLS PREDICTION PROGRAM
PHFDICTS Nat just SCO RED FLAWS, bul NOSCORES,
A WAYS and HOMES.
IT WORKS We guarantee the program performs significantly
better than chance,
ADAPTABLE "Poolsw inner" allows the precise prediction
formula to be set by the user you can develop
n i] hjsi you awn qua mstfiod i'mr.ih.iih.-
aru given On Avery fixture Choose as many or
as few selections as vuu wish.
EASY TO USE Fully menu driven, with detailed instruction
Booklet,
DATABASE The program comes complete with the largest
database avail able- over 20,000 matches. The
database automatical ly updates as results (jre led
in.
SPECTRUM (48K) ZX 81 <16K. r £15 00 |aH inclusive I
We produce databases tor those developing their own prediction
program, 2 years results f 7. SO. 5 years results £12.50.
Also "COURSE WINN Eft" - Computer aided hors* betting £9.50
Available from dealers, or direct iFeturn of poati from , . .
Selec Software
37 Councillor Lane,
Cheadle, Cheshire
0G1 428 7425
DEALER ENQUIRIES WELCOME
16
SINCLAIR USER February 1984
Take a giant step closer to reality with
New Generation Software, The 3l>
Graphics of New Generation programs
bring the screen alive and makes other
games look as flat as snakes and ladders.
Spectrum owners will find that seeing
is believing when they open the door on
'The Corridors of gknon', the Latest
creation from New Generation. You will
be saving the 1 'inverse from the evil that
now controls all things Bui beware - the
sound of footsteps approaching could be
Kt>giil!
Corridocs at Genoa for 18K Spectrum iS'ts
It is a superb program, and a well
conceived plat. Brllltantf "Value far
money 10O% ' Home Computing Weekly
KncMhjDfcr-tSKSjKrtnjin £595
'Addictive, playable game'C& V Games
30 Tuimel fat 16K, 48K Spectrum £5.£5
A masterpiece of pntgtummlng ' C & V G
I lurtle into a void leaving a trail for
your unseen pursuers in "Knot in 3D'.
Weave your way through up to five trails
but be careful, you could get knotted! Or
travel through the depths of a moving
runnel full of bats, rats, spiders and toads in
'3D Tl tnnel', with a special surprise in the
48 K version.
Stamina is The vital ingredient of
Escape', as you'll be venturing into the
maze pursued by walking and flying
dinosaurs.
ZX8 1 owners must he prepared for the
Escape fur KiK Sj»cL-rruin £4.95
iim.' of the hfst and most < wigfrwl gaum »
u\' turn- si*vt jiir tin- 'ifmlrtttn' Situhdr I ser
3D Muftoicr tef tor I6K ZX8I *493
RrtHitmt. Hritliant. Brilliant
ftiput/trt umpntiniiWtfkiy
3D Defcntkf bf 16K 2X81 fc4.pl
' ini)tfxv_il> Vtinmr' Sinclair 1 j*r
shock of coming face to lace with the
T. Rex that leaps out from "3D MONSTER
Maze'. '3D Defender' takes you out of this
world and plunges you into space in a fast
moving game to defend your home planet
against alien spacecraft in a blitz > if
explosions, plasma blasts and photon
beams.
All these exciting 5D games have been
designed hy Malcolm Evans, the 3D
expert 7Tiey T U have you leaping out of
your seat because you don't just play New
Generation ganies, y*>u live them.
Products j vdLJ j hit- hwn
W tl Smith. Boots,
McnzieSj Spectrum
(jump, HMV, and
,ill Irddin^di-paitment
& computer stores
ihhishm hji>iua2 mi knu.". asm
M jjI h »drr hv renan
ont miss
boat!
IMIII
^Tfr?
\
I
tt„
0*
fry Trans version, If you dare.
i^CTminate the Alien Pods in their Galactic ^^
Grid under the protection of chetr Guardians. ttTI make your green
finf*rs h:ch with exciterrfent' Only £5,90
Avoid the ravenous monsters as you dig your way out of trouble with
Digger Dan Trigger "Digger'" for only £5.90'
Hunchback - just like the Arcade original. Rescue Esmerelda but
you'll have to swing the rope, jump the ramparts and avoid the arrows,
knights and fireballs. It really rings with fun and excitement for only
£6.90
The escapades of Moon Alert could turn even you
into a complete Lunartic. You'll really lift-off for only
£5,90, but we warn you - - , it's no walkabout.
Now y&u tan try your handicap on the testing greens of the famous
Royal Btrkdale Set the wind direction and speed, select your iron and
use you skill to emulate the golfing "greats". At only £6.90 you'd better
foin this club now*
Armageddon, and this could be your last chance to save the Earth
from nuclear attack. For only £5.90 you can be the commander of the
missile defence battery . . . don't miss it!
Rescue puts you right in the pilot's seat. Airlift your men to safety
rf&s
<£y^h>
W,
K
away from the enemy
tanks and aircraft.
Hi-res graphics at low-cost
price. Only £5.90.
The exploits of Eskimo Eddie and his faithful pa) Percy Penguin can
mean only chills and thrills in Santalarvd with Growler and the Snowbog
to hot-up the action. Cracking fun and Arctic action for only £5-90
Conquer the mighty Kong in one of the UK h s best sellers. Rescue
The Ocean line's
fun-packed
Spectrum voyag
^ justth
' icket!
maiden from the clutches of the
might/ beast and be a hero for only £S .90
You've never seen anything like Mr. Wimpy - ii>e
craziest, zaniest burger battle to sizzle your screens. The
greatest game under the hun for only £5.90. Quick before
ft burns!
Ocean Software is available from selected branches of: WOOUfi/ORTH ,\\ II SMI 111.
Ocean Software,
Ralli Burl ding, Stanley
Manchester M 3 SFD.
Telephone: 061 832 9-M3,
John Memies, LASKfS Rumbelows,
Spectrum Shops, and all good software dealers. Trade enquiries phone: 06 1 832 7049.
I
I
I
I
I
■
OMNICALC (4HK Spectrum)
The best Spec I rum spreadsheet you
can buy. Written in mac hint coda, to
be taster, Id give you mora Space for
data, and to include mora features, it
IS guaranteed unr; rash able Complete
wllh comprehensive manual CB.B3
"If more pragrttma shared the quality
at OMNICALC ffien we might see mora
Spec J corns in ottic*S"
| Home Computing Weakly 3/6/83)
EVOLUTION (4BH Spectrum)
M eel Tyra n n os«U ru * He*. Pod optery x ,
Brontosaurus and many more fo*C ma-
ting creatures on thaiourney fromth*
start or life to man. See 35QO million
years of evolution Com pressed Into
half an hour tfl.95
Available at good computer shops- everywhere, or by man order from MICROSPHERE, 72, Rosebery Road, London N10 2 LA (Tel: 01 843 9411
> WHEELIE £40K Spectrum)
At proud owner of the u It imala racing
motorbike, you find yourself In a
strange wo rid— a world Tu II of doubl*-
dec ker buses to lea p a n d w h e re a v e n
the hedgehogs, are nut to get you/I
Your only hope of escape is to find (he
elusive ghoitrider end then beat him
in a itfe-or-deeth race.
1 Otfta machine- code action, keyboard
and joystick options., demonstration-
mode, and amazing graphics combine
to make WH E ELI E one of TH E g a m e s
for 1984 . . onlyCS.flS
THE TRAIN GAME ( 1 6/4HK Spectrum)
Thai game that starts where modal
railways left off. Full graphics featur-
ing passenger, goods £ express trains.
tunnels; stations; turntable honus
games: irate passengers; collision!
derailments; and everything else you'd
expect from a major railway! jusl C5-0S
" ... an e.ncef(enr gamt) which Is
original, wall thought-out and full of
action" (S- User Nov S3)
"Fun, tun, tun to piay . . .
4 Home Computing Weekly 27/B/B3)
CSM 64 and BBC owners - WHEELIE and THE TRAIN GAME will soon be ready
for your micros.
Items marked * are available from selected branches of ffijtfk
40
SINCLAIR USER February 188
WIN A ROBOT
Superb prizes in our
two-part competition / ■
The fabulous first prize in our
greatest ever competition is
Topo, a child- sized robot
which follows computer com-
mands via an infra-red sig-
nal. Using the interface
which we are giving away
with the prize, you will be
able to guide the multi-
talented Topo around the
house or classroom using
your Spectrum, and even
make him speak.
Our second prize winner
will receive two Sinclair Re-
search Microdrives, together
with an Interface 1, an Enter-
face 2, five blank Microdrive
cartridges, and two amazing
games cartridges, Tranz Am
and Pssst.
The fantastic third prize is
a Fidelity colour TV set.
Twenty-five runners-up will
each receive five games
tapes from leading software
houses, Artie Computing,
Automata, Crystal Comput-
ing, and New Generation.
Finally, every one of the
prize-winners in our competi-
tion will receive a free year's
subscription to the exciting
new ECC magazine Your
Robot, to be published bi-
monthly from April 1984.
The competition is in two
parts, and all you have to do
this month is to devise a pro-
gram which will produce a
graphic representation of a
robot, making imaginative
use of the colour and graphics
capabilities of your Spec-
trum, DO NOT POST YOUR
ENTRY UNTIL YOU HAVE
COMPLETED PART 2 OF now. Set to work on th<
THE COMPETITION which picture of a robot that
will appear in our March your Spectrum
issue. Two coupons, one from can produce,
this month's Sinclair User and and good
one from next month's, must
accompany all entries.
Make sure you don't miss the
second instalment of this superb
competition by ordering next
month's copy of Sinclair User
SINCLAIR USER February 1984
41
GET THE RIGHT ANGLE
ON YOUR SPECTRUM
r n l?hi'« ££ ^ rn * "*^ r ^bectrum Into the mow sophisticated q am «
machine in the world Your finger* rest on the tTicHstit* s si* urv&mw
pads tf our direction and two * ire button ™J tSSSSoJ you SrSHhe
faster vou go or the harder >ou turn
TritkstlcK works by picking up mains hum trom your body and
converting It by an Ingenious circuit design directly Into digital input
Proportionality gives Mast possibilities for more interesting games
* Each Trlckstic* comes with its own interface Included in the price
software .
* Easv to program, even for proportional games
* in the .hop* soon now available bv mall telephone order at SMJO.
\
\
\
%
\
\
X
\
\
Nv
X
x
TRICKSTICK
The revolution that
Runs Rings round
ordinary joystick
^
tfPQRWD* NOUR ti&Jfe 2 OR \
SWCTTOIR TOR JUST £13
MKJGEl l\£A.50 COW W
BEYOND H0RX2ON5
WBSOUJTBX TOEE
The SPae simo^ oiugs \nto the souets
provided Ov Sinclair in wur Spectrum tav< to
m . lu^ instructions pro>jiaeG and no
soldermq fas both \vai* 2 and vwoe ^
machines uwue a t^b^i and gi^es mow 4
standard <Wk Spectrum. m\g no other
expansion kit auo>NS vou to uDoraoe later 10
the &0k Spectrum C^ei 10 ,000 ^fc Spectrum
owners ha^e already upgraded \t*\V(\ thest>4B
\ loin them .
fcndvou get a *ree copn tf atvono
horizons , so there s vet another angle to
look at
* *QK1* iQottirt. m^sftt, .i^,^
»MaU»ft« VNWt^ flfr \o\ow2™ 11 * *™^
e*»W m* spec^ SSSSSS2*^J
*? arm ^
w w\ t
.\Q
- £51.50
two *»255SJ52 ftoSwert t>utww\wi
T h\s teaching program has a^eaon mao*
vs* memory , teattxes nou to Ptt* at*o ?o*,t
\NKem& lanattm. <ftw«ft ^gu no* w* dfema*
n\* anoto^ut atXTMom^s^OT^ *\o>n a^k^\c
»T o^t aro \\ stoif fe^ OHte Pm ttxte ano rnvitn
n\uct\ mote Outs\aT\o\<\<i ^ a \u% ^ot t^ose *no
q^t ^tu^y ot\ tne setona t\a\^ m wv^ ^MCttum
maffvuti
TrickstickC34 50
AttaktlCsEIO.OO .
spae (issues 2 & 5 E23 f issue 1 cssj
SPSO £57. 50 (Please specif v which issue 1
0B/8OFQRTHE14.95
Bey on a h or) zo ns tA . so
programmable interface ElO(wlthTrtckstlck)
postage so. 65
1 enclose cheque, po for
0.65
mv Access / visa n u m ber ts
n
Address.
East London Robotics Ltd,.
Gate 11, Royal Albert Dock,
Lon<tonEl6
34 Hour Access and visa
ordering 01-474 4430
EAST LONDON
* I I
TISS
Sprites put life
into the games
of your choice
John Gilbert looks at some of the new
designer packages on the market
CREATION and programming
of games on the Spectrum has
always been left to the imagina-
tion of those who had the nerve to enter
the world of machine code and had the
creative talent to produce such products
as Manic Miner and The Corridors
of Genon.
That elite club has been broken by
some software companies which have
produced packages to allow even a be-
ginner to produce competent arcade and
adventure games. Those packages con-
tain machine code routines which can
be manipulated to produce the sound
and vision necessary for games play.
The first company to produce such a
utility package for the creation of arcade
games was Quicksilva, with Games
Designer in 1933.
The user can create up to eight games
in the package, each with varying for-
mats and characters. For instance, you
could create a mixture of all the classic
arcade games using Space Invaders,
Defender and even Pacman. Those
characters are limited only to what the
imagination of the users can produce.
Quicksilva produced eight example
games in the package to show what kind
of effects can be obtained. They include
mutant hamburgers, flying tanks and
jet-propelled spiders. All of those char-
acters are created using a sprite tech-
nique.
Sprites are graphics characters, like
user-defined graphics on the Spectrum s
which are four times the size of one
character square. A sprite can be any-
thing which moves in those pre-defined
squares and the sprite editor in Games
Designer will allow you to set up several
of those characters. Most of them have
already been used to create aliens for the
example games but you can alter them
for your own programs. There art also
two spare sprites which have not been
used for design and you can use them if
you wish to start building from scratch.
When you have selected the *alter
sprite' option from the main menu, the
computer will display a 12 x 12 grid on
the screen with the current shape of the
sprite displayed in it. Using the cursor
keys you can alter the places in which
ink is inserted and omit pieces of the
design you do not want.
There are various types of sprite
characters you can use and they include
aliens, spaceships and explosion se-
quences. When you have finished alter-
ing one of the sprites you can change
the colour of the object if necessary by
using the 'alter attributes* option on the
sprite editor page.
Aliens and explosions can be animat-
ed by using several sprites which show
progressively the course of the action —
like stop- frame photography. When
each of the sprites is switched on to the
screen in sequence^, the characters tak-
ing part in the game seem to move. You
can change the colour of each individual
sprite so that it is possible to make an
formal of the game you are designing.
The format will decide whether the
game has the movement patterns of
Galax ians, invaders, defenders or
asteroids and whether your laser base or
spaceship moves vertically or horizon-
tally across the screen.
To add to the excitement you can also
introduce special effects on to the
"The series of routines should provide a
great deal of entertainment and its use is
limited only by the creator's ingenuity
?)
animated figure, or explosion, flash
after each movement.
The movement of the sprites round
the screen can be achieved by using
another main menu option. For move-
ment you must form a pattern of num-
bers which represent the movement of
an individual sprite into an attack wave.
Sprites can be made to dive-bomb 3
swoop on the player-figure, or even to
loop the loop. It is possible to change
the concept of a game by changing only
a few numbers in the movement pat-
tern -
Another important feature of the
package, listed on the main menu, is the
'configuration' option. It will allow you
to change one game into another and
one of its functions is to create the
screen. They include stars if you want
your game in space, shields for the
defence of spaceships, and a factor
which will determine whether the aliens
appear individually or in groups.
The other features in Games Design-
er include a sound generator with which
laser zaps can be created. A high score
Fable, Like the one Quicksilva uses in its
other games, is also included at the end
of each of the games created.
When the package is used initially it
is novel in concept and many entertain-
ing games can be created using it. Un-
fortunately there arc some snags with
the package. You can load and save new
games which you have created but they
can be used only when the creator
program is running. You will also find
44
SINCLAIR USER February im
DIY Software =
that after you have created several
games they will all seem similar in
movement and content. All you can
create is one type of game — zap the
objects or be zapped.
Apart from that small criticism the
series of routines provided in Games
Designer should provide a great deal of
entertainment and its use is limited only
by the creator's ingenuity.
Melbourne House, publisher of The
Hobbit, announced a similar product at
the same time as Quicksilva. The pack-
age, the HURG, reached the market
later than Garne^ oer. Its purpose
is the same and with it you should be
able to create some imaginative arcade
games .
The HURG is slightly different from
Games Designer as it asks the user
questions for the construction of the
player shapes which are to be manipu-
lated on the screen.
The package also provides subrou-
tines for creating graphics and sound
explosion effects. Like Games Design-
er, the software created using it can be
played only with ihe HURG control
program. Thai makes the two packages
alike, the only major difference in con-
cept and design being that Melbourne
House has only three example programs
in its package as opposed to the Quick-
silva eight.
If you do not like arcade games, or
become disenchanted with them, you
might like to try writing adventure
games in machine code without the
trouble of writing the code. The- Quill,
from Gilsoft, will set up a database for
your own textual adventure and all you
have to do is enter the text and direc-
tions of the locations through which
you want the player to move. You can
then enter the items which can be found
in the adventure scenario and the loca-
tions into which they should be situat-
ed.
Provided with the program is an
excellent manual which takes the user
through the setting-up procedure of a
simple adventure scenario, as well as
options you want to enter into your
adventure you can test it by using the
demonstration mode. You can go
through the locations and test all the
traps without destroying the main data-
base creator.
If there is something which is incor-
rect in the scenarios you can change
them by using the database editor.
When finally you are pleased with the
adventure you have created you can
SAVE it to tape. Unlike the two arcade
games designers, the adventures you
create using The Quill can be run inde-
pendently from the control and creator
program. Gilsoft will permit users to
market games which have been created
using it so long as its name is displayed
prominently on all labelling.
It has also gone to the lengths of
describing The Quill program and how
it produces an adventure game. That
means you have complete control over
what you produce and an interesting
insight into a program which should
keep adventure players happy for a long
- time.
Unlike the arcade games designers
there are virtually no limits 10 what type
of adventure scenario you produce. Pro-
gram generators provide an excellent
opportunity for users of the Spectrum
to produce games and not to rely so
much on professional manufacturers. It
must be said, however, that the arcade
and adventure games which you pro-
duce will provide few surprises when
you play them. The packages available
allow you to write games for other
people to play. There is nothing more
uninteresting than playing your own
adventure games.
The generators will provide a good
deal of fun but are more likely to be
used as utilities and not as a replace-
ment for professional software.
Professional manufacturers will still
"If you do not like arcade games, you might
like to try writing adventure games without
the trouble of writing the code"
showing the meaning of all the options
on the main menu.
The adventures need not consist only
of picking up objects or moving around
locations. The machine code routines in
The Quill will allow complex adventure
actions, including switching torches on
and off and providing specific actions
for players to perform, such as eating
apples, shaking leaves from a tree, or
wearing a hat.
Once you have finished setting up the
provide the quality and originality in
software. No package, even if it is bril-
liant in the production of games using
the sausage machine technique, will
provide an answer to properly machine-
coded and Original games.
Quicksllva Ltd, Palmerston Park House, 13
Palmerston Road, Southampton, Hampshire
S01 ILL.
Melbourne House, 131 Trafalgar Road,
Greenwich, London SE10,
Gilsoft, 30 Hawthorn Road, Barry, South
Glamorgan.
SINCLAIR USER Ftbrmry 1984
a
ABF
MICRODRIVE [ (
OK. FOR ALL IS 3
PROGRAMMABLE
or ZXS1
PROGRAMMABLE INTERFACE
The AGf Programmable Joystick Interfaced
a uniq ue design offering the use of arty Atari-
compatible joystick with absolutely all soft-
ware, whether it is cassette or ROM cart-
ridge, with the Sinclair Spectrum or ZX8I,
The hardware program mable interface re-
quires no additional software and accurately
replicates the key* of the computer in a
manner which is responsive to absolutely
ALL key reading methods, both BASIC and
Machine Code.
The interface do* J not interfere with key
operation and can therefore be ussed simul-
taneously with the keyboard.
There is no need to re move the interface once
fitted as the rear extension connector will
accommodate further expansion, Le printer;,
or RAM packs etc. This important feature
avoid i excessive wear to the expansion port.
The key replication principle pioneered by
AGF means that your own programs can use
eight directional joystick movement by
utilising simple key reading BASIC
Two joystick sockets are provided which
share the same keys, for use with the
majority of two player games. Several inter-
faces may be used on the same computer for
multiple joystick applications.
The interface is programmed by a two digit
code, which is looked up on a programming
chart supplied, for each direction and firing
button. The two numbers are then selected
on a pair of leads which are clipped onto
appropriately numbered strips on the inter-
face.
Once configured this can be marked on a *
Quick Reference Programming Card for
storing with the game. As the programming *
a noi power dep eri£ '* :rtt tne interface retains
the last configuration made and can be 4
immediately used when neM switched on.
PLEASE ALLOW 2S DAYS FOR DELIVERY
KEY FEATURES
* Programmable design gives TOTAL soft-
ware support.
* Accepts Atari, Competition Pro, Wico,
Star fighter. Quick Shot, Le Stick etc.
* Kcar extension connector for all other
add-nnx,
* Kree demo program and instructions.
FROM: MR/MRS/MISS
ADDRESS
SEND C.W.O. (NO STAMP NEEDED) TO: A.G.F. HARDWARE, DEPT SU
FREEPOST, BOGNOR REGIS, WEST SUSSEX, PQ22 9BR
VS
^
x>
PACKAGE CONTENTS SUPPLIED
■ Programmable Interface Module is illu*
traled, complete with ctrp~Of] program
riling lead. 1 :,
• Self adhesive programming chart detailing
how to define which key is simulated by
UP, DOWN. LEFT, RIGHT, and FIRE
this can be fixed on to the case of your
computer or if preferred the protective
backing can be left on, I he ch^M is made
of 9 very durable reverse printed plastic
and is extremely easy tu read.
• One pack of ten Quick Reference Pro-
gramming Ords for at-a-gluuce -.elling
to your games requirement*. The card
allows you to mark I lie configuration in
an easy to read fashion with space to
record the software title and company
name,
• Video Oraffili demonstration program
which is written totally in BASIC to
trale how all eight directions and fire
can be read. Ihik It also a useful high
resolution drawing program.
• 12 months guarantee and lull written
instructions.
FOR USE WITH OUR LNTERFACE
Module ot VR 20. C ommodroe 64,
Atari VCS, Atari 4(XL Atari H00
II you require extra Joysticks fot our
original interlace module mark order
'OLD* Joysticks
ONLY£7 54inc VAT + P&P
ALL ORDERS CONFIRMED
QTY
ONE
ITEM
PROGRAMMABLE INTERFACE
JOYSTICKS)
PACKISI QUICK REFERENCE CARDS
VIDEOGRAFFITI
ITEM PRICE
33.95
1 b4
1 00
FRfcE
ZX8t □ 2X SPECTRUM D Please tick
DEALER ENQUIRES WELCOME EXPQR T PR ICLS ON APPUCA TIPS
FINAL TOTAL
TOTAL,
46
SINCLAIR USER Kbnuiry 1984
E COMPATIBILITY
S5UE SPECTRUMS
Computer
Trade
Association
Member
%
for.
■+M-W" ■■«■■•■ ?■*■? ;;_; wi
:i: :"t"
rum
JOYSTICK INTERFACE
Hm Interface Module II has been specially
riesimied to plug «n lo itie rear connector
ofWzxVct^ or ZX8I and allow
vou to connect any standard Atari type
digital Jovstieks. All of the computer s
connections are duplicated on an extension
connect or so that you can still use any other
devices intended for um with jrottf computer.
The Interface Module II resides in the same
memory space as the keyboard, which re-
main ■. fully fund i (hi a I at all time*, therefor*
it will not interfere with anything clw
connected.
When ft suitable joystick is plugged into
'PLmei f socket its action will mimic pres-
sing the cursor Keys, up "7", lift "S" «•»«
on. The firing button will simulate Key*.
[he gflique feat ure guarantees the best snlt-
ware support.
Take a look at the selection of compatible
■amen we have listed. More are being added
Si th* time *h a result of out contact with
ttir various software companies.
A second Joystick may he connected in ihe
■■Flim 2" position which simulates in a para-
[W fashion ke>* T-Y-U-I-P. This will allow
you to play a whole new generation ot two
player gam es.
r
"Ilili ■"■"•■J5!
g an ii *■*■*<
AGF COMPATIBLE SOFTWARE -
AVAILABLE NA'IUJNWIBE
The following titles are available from us
Apocolypse
So ftware
DK 'Tronic*
Galactic Jailbreak/
Snake
ju Ian*
Splat !
Pheenix
Escape
JD Tunnel
Knot in 3D
Cyber Hats
£4.SS
£4.95
In i. entive
Software Ltd IS. SO
Megadodo
Software £5.50
New feneration
Software £4,9 5
'• " LS.9S
" " £5.95
Silvers oft
KEY FEATURES
* Proven cursor key simulation fot
maximum software support
* AccepU Atari. Competition Pio, Wico,
Starlight er. Le Stick, etc Joysticks
* Second Joystick facility
* Rear extension connecloi for all other
add- on*
COMPATIBILITY CASSETTES £4.95
These cassettes have short programs to
load before the chosen prat which will
convert it to use the cursor keys and there-
fore become compatible with the Interface
Module II.
Cassette 1 converts
Arcadia
Schizoids
Hungry Horace
Horace Goes Skiing
Spectre*
Penetrator
Cassette 2 converts
Centipede
Planetoids
Jet-Pac
t P&sst
3D Combat Zone
| Will require 48 K Memory.
FROM: MR/MRS/MISS
ADDRESS
TENDC.WLO: (NO STAMP NEEDE D) TP A.G.F. HARDWARE, PEPT. SL[
^REEPOStT BOGT« RR^IS^E^USSEX i ^_229BR .
QTY
ITEM
INTERFACE MODULE ti
JOYSTICK(S)
SOFTWARE
SOFTWARE:
zx8i n
ZX SPECTRUM D Please tick
ITEM PRICE
16.95
7.54
TOTAL
FINAL TOTAL
DEALER ENQ IMIW WKl.COM t:
y XPOIi T PRH *■<! ™ -1 "'' " ' T/f A"
Ashby Computer Centre
186 Ashby High Street, Scunthorpe,
S. Humberside DN 16 2JK
Brainwave Microcomputers
24 frown Street, Ipswich, Suffolk JP1 3LD
Buffer Micro Ltd —«.**
3L0 StrtatluUH High Road, London 5U-16
Chelsea Micros Ltd
14 Jerdan Place, London SWG IBM
Computers of Wigmore Street
8T Wigmore Street, London WlH 9 It A
Every body s Hobbies
1 Great Oilman Street, Ipswich,
Suffolk UM 2AA
WHERE TO BUY AGF PRODUCTS OVER THL COUNTER
l?t^rSfston, Lancashire PK I 2 A I *gg^™»W, Moor Park, Northwood
Comer
24 Gloucester Road, Brighton BN I 4AQ
GB Mkroland
7 Queens Parade, London Road,
Waterlonville, Hants
Melajay Hi-Tech Ltd
49 Broad Street, Hereford KR4 9AR
296 Gloucester Road, Horfield, Bristol
Raven Video , „ , .
74 Green Lane, Tettenhall, Wolverhampton
Screen Scene
144 St George's Road, Cheltenham
Syntax Computers
76 Cornwall Street. Plymouth PL I 1N5>
TeJeoo Video or ,. n
53 Maple Road, Fenge, London S£20
Telford Electronics & Computing
26a Bradford Street, Shipnal.
Shropshire TH1 8AU
The Computer Shop
Unit 25, Handysidc Arcade, Percy Slreet,
Newcastle-upon-Tyne NE I 4PZ
The Computer Cento* (Humberside) Ltd
26 Anlaby Road, Hull HU1 1PA
47
SIKCLAIR USER Febrvam 1984
HEARING IS BELIEVING
Tele Sound
SPECTRUM BEEP BOOSTER
TELESODND is ready hml l and
tested so that you can get (he
full sound of your Spectrum
through any unmodified
television set, bliek and white
or colour. The unit is easy to
fit in minutes without any
previous experience as lull
tittir.g instructions are
provided.
TILESOVMD has b**n designed
using the very latest ultia
miniature components so it's
size is an incrtdifclr 2 i 1 J I Irani,
ud firs ittdtlr inside the Spectrum
Thiee easy push-on
connections are made to the
Spectrum. The connections
are clearly shown in a
diagram that comes with
full fitting instructions.
TELESOUND FEATURES
■ soma and vision rourrau rn amis iuusk
. nv wvmi cosrnDLutiu; Fun a whisper td a idu
• AEfWAD CUCl CLUILf HUU TO ASSIST "1M1I.M urn
• nauAHS CAN II H£MP vhui biinc uudo ■ m SfrLDtiiNC oi CJtiE cuttinc mjmiini
• IJSmjNJll AMrliFLH »lff MtCUSJlIT * 5EFUJITI HMU SWPL1! N»T 1HHIIKD
■ VIC! KD KEBOIT Ml ItMlS WITH AL1 rlMMNS < WHPArilLI 1ITS IL1 OTHU US-Mi
1HHVHNC WClOMIU
TELESOUND comes complete with easy to follow fitting
instructions and costs £9,95 inclusive of post, packing
etc. Please state your computer when ordering.
COMPUSQUND
MjKtfKMD
□
DEFT: SU 3 12 ■ 13 UNCIii CLOSE, REBDITCH. WORCESTERSHIRE.
B98 GET. TELEPHONE: (OS Z 7} 21429 {21439 Airswerphont)
BUSINESS USERS
SPECTRUM 48K
ACCOUNTS PREPARATION
Produces Prime Entry Listings, Nominal Ledger, Trial Balance,
Profit and Loss Account and Balance Sheet with supporting
schedules. 73 nominal ledger accounts arid automatic VAT
calculations.
Sole Trader/Partnership (Up to 4) £25 00
Limited Company £25,00
(Combined Price £35.001
SALES AND PURCHASE LEDGERS
Produces day book, sales/purchases and VAT analyses,
debtors/creditors listings and statements, 250 accounts and
1000 monthly transactions. Automatically calculates
VAT. £25.00
IX 81 16K
ACCOUNTS PREPARATION
31 nominal ledger accounts
Sole Trader £17 50
Limited Com pany £ 1 7 . 50
(Combined Price £25 00)
SALES AND PURCHASE LEDGERS
Produces day book, sales/purchase and VAT analyses,
debtors/creditors listings, statements.
50 accounts and 200 monthly transactions-
Sales £20.00
Purchases £20. 00
(Combined Price £25 001
All programs have bean professionally developed and are
being used by practising accountants and small businesses.
Supplied on cassette with operating instructions.
Futt deceits;
HESTACREST LIMITED
P.O. Box 19, Leightori Buzzard, Beds. LU7 ODG
Tel 052-523 7785
?p
%
•^^03^^
* &
• #
^t><ffs>"
4B
SINCLAIR USER FrWur /JWJ
ZX-81 Software Scene =
An excellent
introduction
THREE GAMES are includ-
ed on the cassette which sup-
plements a book, ZX-81/TS
1000 Programming for Young
Programmers, published by
McGraw Hill
Two of the games, Bomb
Run and Mazer, are written
in machine code for IK ma-
chines and manage to provide
plenty of action and enter-
tainment. In Bomb Run, you
are in an aircraft which loses
altitude on each run and you
must bomb various buildings
out of your way before you
crash into them. You have
only a limited number of mis-
siles, so it is important to use
them sparingly and accurate-
Ly.
Mazer is a simple maze
game in which the object is to
avoid the ghost and stay on
the move as long as possible.
Each time you move, you
score a point. Novices will
enjoy the ease of scoring and
the practical layout of the
keyboard; any key in the top
row moves you up, any key in
the bottom row moves you
down, and the left- and right-
hand sides of the keyboard
will move left and right re-
spectively. Both games allow
you to start again easily if you
crash or are eaten by ghosts.
Golems for the 16K. Spec-
trum is a more complicated
strategy and fantasy adven-
ture game in which your ob-
ject is to outwit the Lord of
the Black Tower,
The cassettes also include
programs which are listed in
the book, including Haog*
man, Sketcher and Owl
Swoop, with additional
graphics and other improve-
ments.
Together the book and
cassette form an excellent
introduction to Basic pro-
gramming on the ZX-Sl.
They are available from
McGraw Hill Book Co,
Shoppenhangers Road, Maid-
enhead, Berkshire. The cas-
sette costs £5.95.
Siege tactics win at
the end of the day
IF YOU have ever fancied
yourself as a military strate-
gist, you should enjoy Fort
Apache for the 16K ZX-81,
In ir vou assume the role of a
general with 300 men in his
command. Your aim is to at-
tack a fort and destroy its
walls and, for each day or
your siege, you must assign
men to such tasks as building
ramps, ladders and battering
rams, manning cannons, col-
lecting ammunition and
fetching rations.
You then decide whether
to attack the gate of the fort,
scale its walls, or tunnel be-
neath them. At the end of the
day, the computer will tell
you the result of the engage-
ment, including how many
men you have lost and how
many rations have been sto-
len.
If you lose more than half
of your troops you have lost
the game. You must remem-
ber that if you do not leave
sufficient men at your base
camp, the fort defenders
might sally forth and attack
you; if you do not feed your
troops adequately, they may
desert.
In spite of the fact that
battering rams and ramps
seem inappropriate weapons
for attacking an Apache fort,
the options and results of
your decisions are reasonably
realistic, making it an absorb-
ing game, despite its simple
presentation and lack of
graphics.
Provided you do not suffer
a particularly disastrous de-
feat, you can continue your
siege for days, keeping any
supplies of food and weapons
you have accumulated from
one day to the nest. You can
also try different tactics to see
if you can outwit the defend-
ers.
The siege of Fort Apache
is produced by Contrast Soft-
ware, Farnham Road, West
Liss, Hampshire GU33 6JU.
It costs £4.95
Complex galactic conflict
YOU WILL need at least one
opponent, writing materials
and plenty of time for Cy-
borg Wars, produced by
Stratagem Cybernetics for
the Timex Sinclair or the
16K ZX-Sl.
A complex strategy game
for up to four players, Cy-
borg Wars is an imaginary
galactic conflict between four
nations of androids battling
over the resources of a small
asteroid. Each player takes
the role of the ruler of one of
the nations and can send
spies to enemy states,, convert
farmers to soldiers, stockpile
rations, or decide to launch
an attack against any other
nation. The outcome of such
battles is decided by the com-
puter, and the ruler's for-
tunes will fluctuate
accordingly.
The eventual aim is either
to establish dominion over
the entire asteroid or to de-
pose all the other rulers. The
game continues from year to
year, with the computer issu-
ing a report on the state of
each country's resources at
the end of each year — or
round. If35 years go by with-
out a military confrontation,
the ruler who can boast the
biggest population is the win-
ner.
The cassette is accompa-
nied by record sheets on
which the players can keep
track of population Figures,
spies lost, rations, crops and
other vital statistics. The fact
that Cyborg Wars has to rely
on such old-fashioned meth-
ods somewhat detracts from
its value as a computer game.
The game is in two parts
and the instructions in the
accompanying booklet must
be followed very closely if the
game is to be loaded success-
fully, It is important not to
make typing errors when in-
putting your password —
make sure that you can repro-
duce them if you make any —
or you will not be able to
proceed.
Despite those disadvan-
tages it is a care fully- thought-
out and elaborate game,
providing ample scope for en-
tertainment for anyone who
has patience and a taste for
games involving a mixture of
luck and judgment.
Cyborg Wars is available
by mail order only from
Stratagem Cybernetics, 286
Corbin Place, New York
1 1235, New York, USA, The
cassette cost £15.
SINCLAIR USER Fvbrwuy 19R4
49
Leave the
Spanish
all at sea
IN PLUNDER, for the 48K
Spectrum, the scene is set in
the 16th century, which
makes a welcome change
from space travel and aliens.
As captain of a British gal-
leon, your task is to patrol the
seas and prevent the Spanish
bringing hack gold across the
Atlantic with which to fi-
nance their Armada.
Your eventual object is to
earn a knighthood for ser-
vices to your country and also
to make sure you outdo your
hated rival Sir Francis Drake,
who will "fall about laugh-
ing'* every time you run the
ship aground or similarly dis-
grace yourself.
Plunder also allows you
to manoeuvre your ship into
port, trade in bazaars to in-
crease your assets, and inves-
tigate uncharted islands, In
spite of the scope for variety
the game provides, it is easy
to engage in a repetitive se-
ries of sea battles and the
slow graphics detract from
any advantage it might have
over a hoard game.
It is also a pity that each
time you lose a round you
have to return to the title
page before you can start
again. A little seafaring prac-
tice should enable you to
avoid the pitfalls and derive
some entertainment from an
interesting concept.
Plunder is produced by
Cases Computer Simula-
tions, 14 Langton Way, Lon-
don SE3 7TL, and costs
£6.00.
Fantasy labyrinth
full of complexity
THE WARLOCK of Firetop
Mountain for the 48K Spec-
trum is the computer version
of the popular Penguin Books
fantasy adventure of the same
name. You can buy the two
together in a smartly-pre-
sented pack or choose the
book or the cassette separate-
iy.
The cassette offers a last
and unusual game in which
you must imagine you are
lost in a vast labyrinth cre-
ated by the evil warlock to
protect himself and his trea-
sures. The labyrinth is haunt-
ed by a variety of un-
speakable monsters, against
which you have only a bow
and your sword to defend
yourself, and scattered
around it are the 15 magic
keys you need to open the
treasure chest, should you
ever manage to locate it.
Even then, your troubles are
not over, as you will have to
find Tht: exit somewhere in
the maze to depart with the
treasure.
The unusual feature is the
way in which the screen
scrolls in four directions, pre-
Alien patrol prevents
an easy rescue
ANYONE who has played
Donkey Kong will find God-
zilla and the Martians for
the 16K Spectrum familiar.
The gorilla at the summit of a
series of ladders has been
changed into a dinosaur
which is protecting the girl of
your dreams from the ew3
intent of invading Martians^
your object is to get to the top
and rescue her before your
oxygen supplies run out.
You will have to be very
proficient on a keyboard to
achieve that aim. As the
groups of Martians patrol
each level, you have to jump
over them one by one and
when you manage to reach
the next level, you will find a
series of man traps which it is
all too easy to fall through.
Inexpert players will find
the game finishes very quick-
ly and a major disadvantage is
that you do not get extra lives
but must start each game
from the beginning.
More explanation about
the scoring system would also
have been an improvement.
Nevertheless, Godzilla and
the Martians will probably
appeal to experienced arcade
games players who enjoy a
challenge to their dexterity. It
is available from Temptation
Software, 27 Cinque Ports
Street, Rye, East Sussex and
costs £5.95.
senting you with a change of
scene each time.
The computer generates
the maze randomly and the
number of keys needed to
move about, open doors,
draw the sword and fire ar-
rows adds to the complexity.
Mastering the controls unJ
improving the speed with
which you move around the
maze make for an addi
pastime and there is the lure
of the magic keys, which in-
crease your score dramatical-
ly whenever you pick one up.
The lack of incident in the
game, with the monsters and
keys appearing only rarely,
might make it seem monoto-
nous after a time.
It is also a pity that when-
ever you lose a battle with
one of the monsters, which is
all too easily done, the game
is finished and you have to
start again. Some way of reco-
vering from an encounter or
of replenishing one's strength
along the journey might have
added interest to the adven-
ture.
The Warlock of Firetop
Mountain is produced by
Penguin Hooks, 536 Kings
Road, London SW 10 OUH.
It costs £5.50 on its own or
£6,95 in the software pack
containing the book and cas-
sette.
SO
SINCLAIR USER Frhruaty ISU
Spectrum Software Scene
Card game
better with
real players
CONTRAST Software has
produced a tape for the 48K
Spectrum called Pontoon
which has little to com mend
il to anyone who has played
the original card game.
Without real life oppo-
nents you can bluff and
stakes with which to gamble,
whether cash or matchsticks,
this simple game loses, much
of its attraction.
The Contrast version does
not have the presentation to
compensate for the de-
ficiencies of the computer as
a medium for playing pon-
toon. Although the responses
are fast, the cards are too
small to make an interesting
screen and it is not possible to
bet more than a single-digit
number, so that even if you
want to do so you cannot
gamble your entire wealth on
the turn of a single card.
The tape also includes
computer versions of Crib-
bage and Mastermind, with
simple screen instructions
which are difficult to follow if
you have never played either
game. It is also a pity that
there is no menu option at
the start of the tape, so that
you have to load each game
separately.
Pontoon is available from
Contrast Software, Earn ham
Road, West Liss, Hampshire
GU33 6JU and costs £4.95.
Birds and bees reveal
true facts of life
THE NAME The Birds
and the Bees may conjure
idyllic images of peaceful
summer days but the new
Bug -Byte game for the 48 K
Spectrum finally will reveal
how tough life can be for a
bee.
On a screen which scrolls
left and right, you must pilot
your bee from flower to flow-
er, picking up pollen to earn
yourself points, and avoiding
hostile birds and centipedes.
The more pollen the bee
picks up, the heavier it be-
comes, making it increasingly
easy prey lor the birds. There
is also a limit to the amount
of pollen it can carry, so that
it has to make periodic trips
to the hive to shed its load.
As your score mounts, new
hazards will appear; first a
swarm of bees and then a bear
intent on raiding the hive for
its store of honey.
This is not only a genuine-
ly original game but a very
entertaining and appealing
one. The graphics are attrac-
tive and the movements, with
the bee swooping uncontrol-
lably up and. down and the
birds dive-bombing with
deadly accuracy, are an in-
genious reproduction of real-
lire conditions in the fields.
Details such as an animat-
ed title page, the aircraft
which flies a Bug- Byte ban-
ner, and the flowers which
open as the bee lands all show
that a great deal of thought
has gone into the product.
The game also offers a de-
gree of difficulty which will
satisfy experienced players
and lure less-experienced
ones to try to improve their
skills.
The Birds and the Bees is
sold by Bug-Byte Software,
Mulberry House, Canning
Place, Liverpool Ll 8J1L It is
obtainable from computer
branches of W H Smith and
costs 0.^5,
Exploring tombs is fun
MICROMANIA'S Tuian-
khamun for the 48 K Spec-
trum is a maze-type arcade
game with sufficient variety
and incident to provide hours
of entertainment.
The game features an ex-
plorer searching a Pharoah's
tomb for treasure while being
pursued by cobras, spiders,
skulls and mummies. He can
fire against the monsters, but
only horizontally, with his
laser, and must at the same
time collect beys to open the
doors between one pan of the
tomb and another. Picking
up treasure increases your
score and you have to make
your escape with the treasure
before your time runs out.
One of the assets of the
game is that the screen scrolls
left sind right, so that you
have a constantly-changing
setting, and a wraparound
facility for the explorer at the
top and, bottom of the screen
maintams the smooth flow of
the action.
There are also five tombs
from which to choose, each
with a small-scale map at the
top of the screen for refer-
ence.
Any of the tombs bears
exploring several times to
And the best route, without
dangerous dead-ends, to the
central treasure chamber.
Another advantage oT the
the carefully-designed game
is that although the various
monsters present you with
plenty of difficulty and chal-
lenge, you do not have to face
the discouragement of start-
ing again every time you are
zapped; you have several
lives to resume your search
from wherever you finished.
Tutankhamun is available
from Micromania, 14 Lower
Hill Road, Epsom. Surrey
KT19 8LT. It costs £5.95.
Mttre wftwart »n page 52
SINCLAIR USER February 1984
51
Fast action
in arcade
favourites
KRAZY KONG and Frogger
are two original arcade games
which PSS has converted to
the 16K Spectrum. The
name of the latter game has
been changed to Hopper.
In Krazy Kong you have
to get up a tower of scaffold-
ing;, using a series of ladders,
to save Jane from King
Kong, avoiding fireballs, bar-
rels, pies, lifts and flans,
If that is not difficult
enough the authors have
made it almost impossible to
get a good control of the
movement keys, as they are
so close together. You may
also have difficulty starting
the game, as the control keys
are in the top left-hand corner
of the keyboard and the start
key is at the bottom right.
Hopper is not much easi-
er, although the control keys
are all in a better position for
play. The difficulty is in the
speed of movement which
can make you take several
jumps at a time.
All the usual elements are
there, including turtles,
crocodiles, a train and some
fast cars on the highway hut
they make the screen over-
crowded and it is difficult to
follow the path of your frog.
That does not make The game
unusable but it would be suit-
ed to those with knowledge of
Frogger who can cope with
fast play or many options —
is not the beginner.
Both games can be ob-
tained from PSS, 452 Stoney
Stanton Road, Coventry,
CV6 5DG. Cost: £5.95 each.
Dangerous castle is
highly recommended
DEFT DUNGEONS and an
attic full of ghosts, witches
and spiders await the player
of Atic Atac for the 18K
Spectrum.
At the start of the colourful
game you can choose one of
the characters available and
they include a wizard, knight
and serf. Each of the charac-
ters uses a different weapon.
The wizard uses a fireball,
the serf a short sword and the
knight an axe.
When your character is set,
you will be transported to a
three-dimensional represents-
tion of the entrance hall to
the castle. To pass the en-
trance door you have to find
the golden key. On the way
you have to pick up food to
keep you going. The authors
have created an amusing and
original representation of the
strength ot characters as it is
whittled away by the attack-
ing monsters. At the right of
the screen is a turkey which,
at the start of the game, has
all its flesh. As the monsters
attack the turkey will lose its
skin and become bones.
When it has been picked
clean you lose one of your
three lives.
Dotted around several of
the rooms— which you will
enter— are time-warp gener-
ators which, if not locked,
will transfer you to another
room or floor. There are also
barred doors through which,
on occasions, you will be able
to pass to other rooms.
The lower levels of the cas-
i le are probably the most dan-
gerous because they have
specific monsters like Dra-
cula and Frankenstein's mon-
ster. They can be destroyed
only with objects which you
collect and not with the
weapon you are given :n the
start of the game,
Atic Atac is highly re-
commended for children and
adults as the depth of plot
and the GAS graphics make
it a superb game. It can be
obtained from Ultimate Flay
the Game, The Green, Ashby
de la Zouch, Leicestershire
LE6 5JU. It costs £5. 50.
Picture puzzle for sleuths
DEVOTEES of murder mys-
teries might like to try their
deductive skills on Murder
at the Manor, a graphics
adventure for the 48K Spec-
trum, The local squire has
been murdered by a thief in
search of the squire's hoard
of gold coins. Making good
his escape, the murderer has
scattered about the country-
side pieces of a page contain-
ing the combination number
of the squire's safe which still
contains a vital clue. It is
your job to find the combi-
nation, the clue and the iden-
tity of the murderer,
The search starts at the
town cross, from which paths
lead to various shops, the po-
lice station, the car park, the
church or the open country-
side—beware of the sheep. As
you reach each location, a
picture of it unfolds and a
compass in the corner of the
screen shows which way you
can go.
Walking about or fighting
with any of the characters
you encounter will sap your
strength and eating any food
you are lucky enough to find
will restore it. If you run out
of strength before you have
solved the mystery, you lose
the game.
At any stage you can check
your score, the clues you hold
and your strength level.
The computer understands
a comprehensive range of
commands in this ingenious
adventure and the graphk]
are iiitractive Nit ,< majm
fault is that the relationship
between the various locations
is not always consistent, so
that however carefully you
keep track of your move-
ments, you may find yoursdt
returning to the same spot
repeatedly. The time it takes
for each picture to appear
also slows the game.
Murder at the Manor is
available from Gemlime, In
Ben Ledi Road, Kirkcaldy,
Fife, and costs £6.95.
52
SINCLAIR USER February !m
IS
Spectrum Software Scene
3D maze game is not
for the beginner
Hamburger
ingredients
are elusive
MR WIMPY for the 46K
Spectrum is an unusual prod-
uct in more ways than one.
Commissioned by Wimpy In-
ternational, it is billed as the
first British computer game
to feature a. promotional char-
acter, complete with com-
pany logo and advertising
jingle.
Mr Wimpy manages to be
an entertaining game in its
own right, It has eight levels
of difficulty and the first
screen entails guiding Mr
Wimpy across The screen
with his tray to collect the
ingredients he needs to make
his hamburgers.
On his way, he has to avoid
manholes which engulf him
and the burger thief who
darts about intent on upset-
ting his tray, compelling him
each time to return to the
start and collect another one.
If he manages to assemble his
ingredients, the next level
brings out the kitchen rebels
in the form of Oggy Egg and
Syd Sos.
The game can be played
with a joystick and if you are
using the keyboard you are
unlikely to be able to match
the speed of most hamburger
restaurants in taking food to
the table. The action is ex-
tremely fast and steering Mr
Wimpy across the screen and
back again without mishap is
a feat possible for only the
verv expert player.
Mr Wimpy is produced by
Ocean Software, Ralli Build-
ing, Stanley Si reel, Man-
chester M3 5FD, and costs
£5.90.
STRIKING 3D graphics are
the outstanding feature of
Android 2, a complex arcade
adventure for the 48K Spec-
trum from Vortex Software.
The game starts as you swoop
over the Death Maze in your
space transporter. As you
land, you are confronted by a
host of hazards such as milli-
toids, hoverdroids, bouncers
and land mines which can
remove your five lives.
Your objective is to kill all
five millitoids before return-
ing to your transporter,
which will [hen take you to
the Paradox Zone and finally
to the Flat lands where your
mission ends
This well-presented game
is definitely not for begin-
ners, The millitoids have to
be blasted three limes before
they disappear and there is
only a limited amount of time
before your transporter takes
off without you, so that get-
ting out of the maze and on to
the next level is a challenging
task.
SkiLk'd players, however,
should derive some satisfac-
tion from the game, which
features a scrolling screen
and a great deal of fast action.
Your score, and the number
of lives you have remaining,
are shown on the right of the
screen, where there is also a
grid showing your exact posi-
tion in the maze, as well as a
gauge telling you how much
time remains before your
transporter takes off.
Android 2 is produced by
Vortex Software, 280 Brook-
lands Road j Manchester M23
9HD and costs £5.95,
Holiday a welcome change
SEQUELS are often a disap-
pointment but anyone who
enjoyed the Mikro-Gen Mad
Martha will probably be hap-
py to add Mad Martha II
for the 48K, Spectrum to
rheir collection.
Subtuled Henry Sails the
Spanish Main, the lively
graphics adventure is set in a
Spanish holiday resort, as is
clearly indicated by the blaz-
ing sun and a spirited render-
ing of Viva Bspana at the
start of the game.
The story features such
things as a perfumed letter, a
succession of doors, a dark
alley and a bullfight. Events
unfold at a brisk pace, with
plenty of variety in the loca-
tions and incidents. You may
well find yourself on a beach
or in a hotel bar, or blunder-
ing on to someone else's bal-
cony, a faux pas which will
land you in the local jail.
There is also a challenging
maze game played against the
clock to enliven the action,
ii h hough you may want to
avoid it if you sutler from
slow fingers. The game also
features a good sprinkling of
useful objects such as specta-
cles and matchboxes to find.
Although the commands
which the computer under-
stands are limited, the graph-
ics are unsophisticated and
the author's grasp of Spanish
appears shaky, it is a well-
constructed adventure in
which it is possible to keep
track of one's movements and
explore new areas when re-
playing the game. You can
choose between three levels
of difficulty and the setting
and light-hearted approach
make a welcome change from
the gothk castles and space
odysseys of so many other
adventure games.
Mad Martha (I is pro-
duced by Mikro-Gen, 1 Dev-
onshire Cottages, London
Road, Bracknell, Berkshire
RGI2 2TQ. It costs £6.95.
STNCLAI R 1 : S K R Hehrt&r ti 1 W4
53
fT HE. STOtOf SO FAK
AT THIS TJtflY
AdMEMf,
PJ MANIACS
ALL OvCR. TXE
W*»«.L.C> 4<tt
RCALj£60<H>
OPpf, THE
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54
SINCLAIR USER Kffenwry /AM
[ IC 6TWM SO rORTHEKJ
ttCTU THE TIMAM \ K*S
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SINCLAIR USER frtrKary I9B4
55
UoUna.YOU*HANIbLll«ILl! TO BEAT ALL ^^^^
Superchess 3.0 has been developed to bring you the strongest chess program yet for
the Spectrum computer.
At the tournament level Superchess 3.0 has a look-ahead of five to seven ply
(moves) in the middle game, and ten to twelve ply in the end game. This gives
Superchess 3.0 a substantial advantage against other chess programs and
promises the experienced player an interesting and challenging game of chess.
Unlike other chess programs, Superchess 3.0 is not just a brute-force calculator,
but employs artificial intelligence techniques to allow deeper searching along the
main lines of play.
FEATURES:
• 10 levels-- all play within tournament I line
limits
• First level made especially fc&Sy tot beginners.
• Easy iq use— herp menus provided.
• Recommended mce option.
• Changs' sides and level during game.
• Self play mode.
• Sel upjchange position.
• Technical information— hown Ine program
"thinks
48K SPECTRUM— Price £8.95
Program's internal score lor position
displayed.
Mumper of evaluated positions displayed.
Library of opening moves,
Select your own colour scheme tor
graphic board display
Soke mating problems— up lo mate m four.
FR1EN DS FOR THE punrus«.
mmm ■^^^•"■"■KKEHIEhOI ETTING IN THREE
SSdOE AGAINST YOUHSPECTBOM
Dealing— the program shuffles, deals and sorts the cards to produce randomly dealt
hands. An almost infinite number of hands are therefore possible, with all kinds of
distributions.
Bidding— is in the familiar ACOL system, including Stayman and Blackwood
conventions. You bid your hand while the Spectrum bids the other three hands.
Card Play— you play from your own and dummy's hands, which are displayed as
they would be at the bridge table, with the program playing the other two hands.
Scoring— at the end of each hand the score is calculated, including honours, slam
and rubber points. Both the old and new scores are displayed in the usual manner
R e pl a y_at the end of each hand, all four hands can be displayed and, if desired, the
hand re played .
48K SPECTRUM BRIDGE PLAYER— £8.95
An ideal complement to the Bridge Prayer Program:
Bridge Tutor : Beg inner si— £5.95
Bridge Tutor (Advanced)— £5.95
SPECIAL OFFER: Bridge Player and both Bridge Tutors— £18.95
Plus for 48K Spectrum unless otherwise
stated:
PLUS for 48K Spectrum:
FLOATING POINT FORTH with EDITOR £13.95
INTEGER FORTH £9.95
SUPERCHESS II £7.95
SUPERCHESS1(16KZX81) £4.95
16K SUPERCHESS <16K Spectrum) E6.9S
REVERSI £6.95
DRAUGHTS £5.95
BACKGAMMON £5.95
SNAIL LOGO (Turtle Graphics) £9.95
GOLFING WORLD £5.95
SINCLAIR USER February ISM
Spectrum Programs
The ten additional BASIC commands provided by Spectrum Extended Basic are considered an essential aid for
most programming applications, so much so that many of these commands are standard features on other Basics.
The program is compact, occupying less than 5K memory, is user friendly- requiring only a two key
entry— and incorporates syntax checking.
The program commands are used and entered just like normal
ipping your usual keyboard input and testing for any of the ten addit
trapping you
The extra commands available are:
• AUTO
Basic keywords, the program operates by
ionai commands.
CLOCK
DELETE
EXAMINE
FIND
auto line number, start and
interval definable.
ONNDFF 12 hour clock, displayed
on screen.
Basic line/block delete.
reads tape headers and displays
information,
find specified string in
Basic program.
MEMORY displays memory status.
RENUMBER full line renumber with GOSUBs
and GOTOs
SCROLL ON/OFF continuous scrolling.
TRACE ON/OFF Slows program
execution, displays line and
statement currently executed.
VARIABLES displays variable names and
contents.
48K Spectrum Extended Basic— £9,95
_f or 1 6K and 48K Spectrum
.«©/&>
^Ntt?*
This is a superior machine code tool kit with one hundred machine code routines that are relocatable for use in
vourown BASIC and/or machine code programs, the combined user friendly BASIC program, 4ak Spectrum only,
oiveseasv access to alt routines: • Index of routines. • Call up details of each routine including all information
—*- * Demonstration of how the routine works under software control,
required to tailor the routine to your needs, •
the demonstration is repeatable. • Save and verify individual routines
Comprehensive user guide.
1
Block Memory Insert
2.
Block Line Delete
3.
ChrS Swop
4.
Ghr$ Scramble
5
Super- Hen umber
6.
2 Byte Converter
7.
Dec-* Hex Converter
a
Hex-" Dec Converter
9
Remkill Condenser
10.
On Error Goto
11.
On Break Goto
12.
Free- Scroller
13.
Non-Delelable Lines
14.
Border Effects
15.
Screen Search
16
Variables Search/ List
17.
24-Line Printing
18
19
20
21
22
23
24
25
28
27
28
29
30
31
32
33
34
Star Draw 35.
Flash Switch 36.
Bright Switch 37,
Paint Shape 38
Record Sound 39
Replay Sound 40.
Sci-Fi Character Sel 41
Memory Available 42.
Line Renumber 43-
Uni-Note Sound-Gen 44.
Dual-Note Sound-Gen 45.
Um-Beep Simulator 46.
Multi-Beep Simulator 47.
Screen Fill 48
Screen Store 49,
Screen Exchange 50,
prolecl Program 51.
Block Copy
Con trad
Expand
Expand Rem
Append
Couni Program
Tape Header Reader
Address
Checker-Board
Remove Colours
Display Memory
Hex Loader
Wait-Key
Strings lo Upper Case
Strings to Lower Case
Program lo Upper Case
Program to Lower Case
52. Confuse
53. Clarity
54. Space Saver
55. Screen Overprint
56. Screen Invert
57 Clear All
58 Ink Change
59 Paper Change
60. Flash On
61 Flash Ott
62. Bright On
63. Bright Off
64. SCreen-Pfinl
65. Random Number Generator
Routines 66-100: Screen rourmes
SUPERCODE £9.95
Also available at Boots, W. H. Smith and all good
computer shops.
Send SAE for catalogue,
DELIVERY:
UK— prices include VAT and postage & packing.
EUROPE— add SOp per program
ALL OTHEfi PLACES— for air mail add £2 for the
first program and 50p for each subsequent program
Surface delivery add BQp per program
Send Cheque, Postal Order or Access No. to:
CP SOFTWARE, Dept SU1
17 Orchard Lane,
P rest wood.
Bucks HP16 ONN
SINCLAIR USFR February 1S84
5?
Paddle your own
canoe with the ZX-81
Outdoor enthusiast Keith Ratcliffe gets physical with his computer.
Nicole Segre reports
IF YOU LIKE the idea of crossing a
rapidly-flowing stream without
leaving the comfort of your front
room, a program by Keith RatclifTc, a
canoeing enthusiast from Chapel-en-le-
Frith, near Stockport, might be just
what you need. Using a simple game
formula, the program printed opposite
demonstrates how to get from one bank
to another in a canoe by choosing the
proper speed and angle to combat the
strength of the current,
AH Ratcliffe's programs combine his
interest in outdoor sports with the arm-
chair joys of computing, He has written
a rock-climbing program, based on a
real-life climb, which is intended to
teach the novice how to make the cor-
rect decisions about choosing a route,
conserving strength and using tools to
reach the top of the rock face. One false
move can lead to a fatal fall, a game
element which adds a touch of spice to a
serious training program.
Another of his programs simulates a
slalom canoe race, the speciality which
he and his wife Geraldine consider their
main hobby. There is also a simple file
program to list the calendar of canoe
racing events through the year and
another more complicated one for the
calculation of race results as they are
received, a laborious process which
usually occupies several people at any
slalom event.
It is all done on a 16K ZX-81 which
RatclilTe bought for £50 5 including
RAM pack, last March. "That was
cheap at the time," he recalls 3
"although it would not cost much more
for the whole lot new today, 1 '
The price of the machine was of
prime importance to Ratcliffe because
he had just been made redundant from a
job for which he had moved his family
to the Stockport area. Formerly a teacher
in an outdoor centre in the Lake Dis-
trict, he had gone to Chapel -en- le- Frith
to take a job as a youth worker with the
Greater Manchester Youth Association,
only to be phased-out barely a year
later. It was as a result of that that he
bought his ZX-81, on the suggestion of
a colleague who recommended comput-
ing as a cheap and mentally-stimulating
hobby to occupy his leisure time.
"As it turned oui, I did not have
much spare time," he says, ,l as I was
back in full-time work only a month
later but that did not mean that the
computer was neglected."
Ratcliffe now works for the Buxton
Action Community Team, a part of the
Manpower Services Commission youth
training scheme. The objective is to
provide practical experience for young-
sters who leave school with few or no
qualifications by finding short-term
work for them in the community, com-
bined with off-the-job training at local
colleges in basic skills such as numeracy
and literacy. The course also includes
an introduction to computers and Rat-
cliflTe has taken that part of the scheme
upon himself by using his ZX-81.
"I devised a simple statistical pro-
gram in which all the students put in
vital facts about themselves, such as
their height, weight, and age, and the
computer then draws a bar chart, M As a
reward for their efforts, Ratcliffe also
allows students to play a commercially-
bought game, Mazogs, in then spare
time. "It always goes down very well,"
58
SINCLAIR USER February 1984
\
User of the Month =
he says, "and helps to make computing
seem much more attractive."
RatclifFe plans to make wider use of
his canoeing programs, which were
written for amusement but could help
canoeing clubs to pass the time in the
winter momhs. He hopes that Man-
chester Canoeing Club t which he joined
recently, will soon be using his cross-
ing-the-river game and the slalom canoe
race simulation as a training aid.
RatclilTe also submitted his race
results programs to the British Canoe
Union. To his amazement, the union
not only wrote to say that other canoe-
ing clubs were already using computer
programs to analyse results but even
included several pages of guidelines on
what such programs should include,
together with a sample program to use
as a basis.
"Drawing-up the results of a slalom
race is. a complicated process," RatclilTe
explains. "Competitors have to partici-
pate in two races. Then a percentage
rating is drawn-up which compares
each competitor's performance in two
separate events, so that differences in
the distances and weather conditions are
taken into account.
"The result of those calculations
gives the competitor's new ranking,
rather like a football club's move up and
down the divisions, which is re-adjusted
at each new event. When you have 100
or so competitors, it all becomes a bit of
a headache."
That explains why canoeists have
resorted so eagerly to computers but
RatclilTe feels he has one advantage over
the others. (L No-one else seems to be
using a ZX-81 and there must be many
of them hidden in various clubs all over
the country," he says. Ratcliffe is happy
with his ZX-S1, which he says has
proved adequate for his purposes, and
has no plans to upgrade to a Spectrum
or any other machine, "The programs I
have written so far do not need colour
or sound/' he says, "In fact., I have
derived as much use from my ZX-8 1 as
from the mainframe computer I used
for my mechanical engineering studies
at the University of East Anglia,"
One of Ratcliffe's projects as a
research student was to study the move-
ments of sediment in the Wash, and he
used the university computer to prn-
duce "a gorgeous tidal chart full of
Os and Is". That gave him a taste
for computing which his ZX-81 has
revived.
Ratcliffe owns only two commercially-
bought tapes, Mazogs and Vu-File, and
generally keeps outlay on the machine
to a minimum. He overcame initial
loading problems by buying Dixons
least expensive tape recorder and has
added a £10 keyboard, the File 60, to
make the machine easier to use for his
two daughters, aged two and four. The
older is already proving proficient at
several programs taken from listings in
books and magazines, including a simple
game, Fisherman, to teach co-ordina-
tion, and another to Learn (he difference
between left and right.
Ratcliffe estimates that he spends an
average of six hours a week on his
computer and wishes he had more time
to devote to it, "but there arc too many
other things to do," he says During the
summer months, he spends one evening
a week rock climbing and the family
goes canoe racing every weekend.
"It used to be my wife's speciality
before we married," he says. "She per-
suaded me to take it up last year and it
makes a marvellous family activity. The
children like cheering us from the
bank." As the family lives on the edge
or the Peak district, there arc also walks
to be enjoyed whenever the wear her is
fine.
Besides his other hobbies, Ratcliffe is
a keen amateur photographer and
thinks that one day he might write a
program for his computer to control
exposure times in his darkroom. "For
the moment, I find it easier to use a
clock," he says.
Another plan concerns a simulation
sailing program, another of his inter-
ests. "We have a dinghy in the back
garden,* 1 he says, "but we never get
around to using it."
Ratcliffe says that he is not a "com-
puter freak" but the ZX-81, together
with his other hobbies, fills ever avail-
able moment, "If I were ever made
redundant again," he says, "I would
have no difficulty knowing how to
occupy my time."
b REM "FERRYULIL>£ N
M
IF X>6£ THEN UDTU 30t
1003 PRINT AT £,4j"<9B> CSS/ 1 .
10 LLT L.U-U.1VIN1 t IU+F->ND*50;j
B?
IF XXI THEN UUTu 310
TAB 20 > "C^ftdV
iS PRINT RT O^b- "'. ib*i*p a*' lb
90
PLOT X,Y
1004 PRINT RT ?,4j"<.^2<'Sr'i*P'9m
*i*p :•"
32
IF RN&<0, 123 THEN UUSUtJ 143
>91>";TR6 20 j ,, <2*iH"W£>"
£0 PRINT flT £1,Qj"< 15*I»P'0*. 1
5
1003 PRINT RT Bj5j "<9B isF 95>"j
S*i*£> >■
tfS
NEXT H
TAB 20 j "<:2*i*P '08 >"
25 PRINT RT 5 < tl>"LURPENT",OJj"
190
IF INT X*31 UP INT X-3£ THE
1006 PRIN1 FIT 3,5j "<90'i*F <«3)"i
MPH"
N uUlU lOWti
TREr 20 j "(ZJliiBP «?>"
J8 PRJiNT RT bjQj'PflDOLING SPEE
200
PAUSE l£3
1O07 PRINT flT iO^rXOa *P'05>"
D?"J
gaa
CLS
10OB PRINT AT 11,5 "tflB'iP "93> M
M) INPUT VEL
.:Ut.
UOTu 15
1003 PAUSE IE J
40 PRINT RT fa i 19,VEL J "flNC^£ TO
300
PRINT RT 1U,U, RNULE TUU SJ1
iaio LLS
CURRENT?",)
RU,"
1011 GOTO 10
45 INPUT RNU
301
PRUbE £60
1500 fur 1-0 tu Jl
50 PRINT PT iM^RNC
JU2
a;
1501 PRINT PT 21-INT Y^2,31-Ij h <.
51 LET ANU-PHHRNUVlSa
983
LuTD 15
m "
55 LET Y*l
JIB
PRINT RT 10, &> "ANGLE TUU Lfl
1302 IF 32-I-INT ^B, 1 ***' THLN LU
5£ LET X*31
RUE"
TU 1505
60 FOR N«0 TO &
ill
PfiU^E 200
1503 IF INK.EY*- "<3" THEN UOTO 151
65 LET DY-1
J 12
CLS
e
70 LET UN-e.S*LU*4*N*C^-NV3a
313
UOTU 15
1504 UOTU 151?
**3
1 ujjO
GLS
150b U_S
75 LET Wt"4*aVEL«C08 RNk >-UN >
1001
PRINT "HELL ONE! TO THE FERRY
1506 PRINT PT 5-5j "LAR-LIZE"
/<VE-L*^1N RNU>
ULIDE INN"
1516 GOTO 20O
00 LET X-K+DX
1003
PRINT RT 3,Sj*>-<*33 <fl4)
15' 17 NEXT I
B5 LET Y-Y+DY
-<"
15 IB RETURN
SINCLAIR USER February 1984
59
More than fun and games!
witkthe
by Primer Educational Software
r he ever-popular Mr Men help prepare
young children for reading with four
simple and absorbing games
designed to exercise essential skills as well
as entertain.
An easy-to-use colour-coded key
guide is included with an illustrated
introductory book, featuring the Mr. Men.
For ages 4 to 8 years. Available now on
cassette for the Spectrum 48 K (and also
for the BBC B and Electron). £8.95
HUME <mm®m
by Wtdgit Soft ware
Two mind-stretching, space-age games to test
mental arithmetic and nimble fingers. In Sum
Vaders alien robots invade the earth. Only quick
thinking and fast reactions can prevent them,
Several levels of difficulty and a two-player game
with a handicap option make Sum Vaders equally
testing for all family members, from 8 years to adult
Robot Tables challenges the young player
to make a series of perfect robots.
Knowing your multiplication tables is the key
to controlling the robot- making machine. With a
learni ng mode and a testing mode, robot Tables is
a fun way for early learners, and more advanced
children, to master an important and often
neglected skill.
Available now on cassette
forthe Spectrum 48K (and also for
the BBC B, Electron and
CAESAR THE CAT
by Andromeda Software
Meet Caesar, a cheeky yo u ng cat o n duty i rt a well-
stocked larder He's kept busy chasing a gang of
hungry mice eating the family's food.
A fast, colourful, all action, arcade- style game
with catchy music and a best-score record
Challenging for high-scoring arcade addicts as well as
great fun to play for the novice. Its a hit on cassette lor
the Commodore 64 and it's coming soon on the
Spectrum 48 K £ 8.9 5
Prices trtciude VAT and post and packaging
MIRRORSOFT programs are available from selected branches of
WH. Smith and Boots, and other feadtng software stockists
Trade enquiries welcome: phone 1-822 3580.
Commodore 64).
£6.95
SOFTWARE FOR ALL THE FAMILY
To MIRRORSOfT. PO Bo* 50. Bromley.
KenrBR2 9TT
Please send mettle following {enter
number required nleacMemin ;
the space provided), j p™*
F*n Slcgs wim M Mr Men i MMO'i
QlHCtTtandrfiolljnill
temrttttCiiiCCCW
I enclose a cheque/PD tort . made payable
|g "Readers Account. Mirror Group Newspapers Ltd"
i understand Itial my
remnancewliibe
held ornTry tsehalf m
Die bank acGounl
named shows until
Vie floods are
daapafcha d
Or please debi! my ACCESS/BAftCLAYCARD lor (he sum of E
M \ LLLU I I I I I I I I I i
Signature
tlame
Address .. .
SU2
Postcode
IWr«*lt*e«l*n*i»«£i™">lrl , 1ei«i«3w«»fcaaij!MiHdriwB'Yrlfwi*; W«E|[)HS«friijnys*iWllW)tnMrt.i***riDiai^HB«j|li^raLlll £o fttij to IttfifiO toij Wtnr Hmtonfjicui IwOatfCl
60
SINCLAIR lliHR FebrwiTv t9B4
Put everything
you need on
the keyboard
with a Custom
Keypanel Kit.
Everything you need
IS on the keyboard with
CUSTOM KKYPANELS.
These precision die-cut plastic panels tit perfect lo-
uver your keyboard and provide an instant and
individual reference to all of your software.
Each Kit comes in a clear plastic stt >rage wallet and
contains; JO Matt-black Keypanelsplus sheets
containing over 1 40 self adhesive Command labels
preprinted with words, symbols and arrows, plus a
sheet of blanks for your own designs
SPECTRUM KEYPANELS are 96 \ 22-tnim and the
labels are printed in 'Spectrum' bright red. A MUST
tor flight-simulation and all multi-key games and
applications.
Ihe FIRST add-on for your Spectrum.
OKI C KE YKANELS are lOSxi^mm and the labels
are 'ORiC blue, Master those CTRL and ESC key
combinations.
An INSTANT reference to all ORJC's keyboard
functions,
NOW IN SUPER ML PLASTIC!
Post today toSofteach limited, 25 College ttoad, Reading.
Berkshire. R(i6 l<JK. TMrdi'^run.li ut you first cWpcwtbyAUVTI
Please send me:
Spectrum KrypaiicI Kits at £3,95 + 35p p&peat h
(overst-as should add 2S% for additional surface m;iil>
( )KJ< ; Kcypancl Kits at £-1.95 4- 3Sp p&p each
(overseas should add 2$9t for additional surface mail )
(enclose a mijlrrmittaiHti if £. cheques/postal
orders pav.ihk to .SoAeach Limited
NAME... .„
ADDRESS _ ..„„,„ „ ,
L
LI
QU1CKSILVA AR_E THE
GAME LORDS...
SPECTRUM PROGRAMS
ANT ATTACK* 6.95 □
Sandy White
GAMES DESIGNER' 14.95U
John Hclfis
BUGABOO' 6.95 i
Indescomp
TRAXX' 6.95 J
Jeff Miriter/Sslamander
GRIDRUNNER' 6.95'
Jeff Minter.-Saiamartder
SMUGGLERS COVE' 6.95H
John Kenea/ly
VELNOR'S LAIR * ft 95 □
Derek Brewster
3D STRATEGY* 6.95 J
Freddy Vachhs
XADOM' 6.95 □
Mike Moscoff
AQUAPLANE' 7.95U
John Hollis
ZX-81 PROGRAMS
QS DEFENDA 3.95 □
Nick Lambert
QS ASTEROIDS 3.95 J
jQhn Holds
OS INVADERS 3.9$ C
Da ve Edwards
OS SCRAMBLE 3.95 C
Dave Edwards
COMMODORE 64
PURPLE TURTLES' 7.95D
Mart <S Richard Moors
AQUAPLANE* 7.95 □
John Hoffls & Sieve Hickman
RING OF POWER*
Mc Ctemont SFred Pr#$tOn
QUINTIC WARRIOR' 7.95 Zl
T.P Walts
ULTlSYNTH't
Natin Sharma
14.95 :
14.
BBC PROGRAMS
THE GENERATORS' 6.95 C
Qsvq Mendes
MINED OUT* 6.95
Ian Andrew A ten Rowlings
BEEBART*t 14.95 H
DaveMendes
PROTECTOR 7.95 D
Andy Green
WIZARD 6.95C
AH Buckley
MUSIC PROCESSOR
Andy William* I4.95C
VIC20 PROGRAMS
TORNADO
CHARTEC
SKY HAWK
CHARTEC
TRADERt 14.95 U
PIXEL POWER 7.95 :J
PIXEL
ATARI PROGRAM
MAGIC WINDOW
II Walker
DRAGON
PROGRAM
MINED OUT
I £ C Andrew
ELECTRON
PROGRAM
MINED OUT'
8.95 U
5.95 □
6.95 D
■ NEW RELEASES
t SUPPLIED IN A
BOX WITH fKQKLET
, ...arid 1964
0theifearof
Alt games marketed exclusively by Quicksilva Limited.
Please send me Irie games t have deked.
I enclose cheque/PO. for.
Send to Quickstlva Mail Order
PO.Box6,
Wttnbom0, Dorset BA2i 7pY
Telephone. (0202) 69 1 744
Natm
Address
Booti. W H Smith*. J Mercies.
Murradeali-r. HMV, Ham**y*.
John lewis. Computer* In Ail
arm all reputable tpetulr,!
tnniputer 5tO#(J
WARMNG These programs are sold according to QUICKSIL M L Ids
terms »t trade and conditions at sale. Copies of which are available on request
f/ There's one
character
no computer
can cope with.
The vultapii; spike, II I ravels
unseen through I he ma ins supply -
diiil il isnurfflk ha vol, wilh any
computer.
- * In the office it can cause
program crashes and lose you
In hits of expensive wurk.
[f you're a computer -. ■ i ( ■ ; M i ■ ■ ■ ,
it can mean frequent callback*,
\t damage to your equipment ami
damage to your reputation.
'. i ihilSespiLn:.". Ii;j[h|j<:ri tOC
nflci! -.mil jHI it lakes to guard
against them is a plug,
P s-fl's PowerCfeaner. Jt cants fust
£8,85 + VAT] and if Jtolftaanyvorta^ surge tot)
sofeievd, Fit one (o ever y computer and v.d. u..«nd a
spik*; should never dWnqpe vain business again
Write for your iurar«*E ^hii.kisl
PowerCleaner
-1 Because it's not worth the risk
n&REIeclricaiJ'iodiHKl.imiieti temple Fields, Harlow,
Esse x CM 2U 2.BG. TeJ : H arlow ( ui 79) M 96 1 . Te lex : 8 1 1 1 m
I
CGP-115. Creates beautiful graphics in reef, blue,
green and black. Text mode prints 40 or 80
characters per line at 12 characters per second
Includes serial and parallel interfaces and easily
replaceable ink cartridges and standard 4W paper
rolls, 26-1 192 .„ £149.00
The Biggest
Name in Little
Computers
See Our Extensive Range of Microcomputer Accessories
At Any One of the 340 Tandy Stores Nationwide!
' T 1 I
1 I -t I -1 ' ' Y T
y
TRACE
FOR ANY ZX SPECTRUM
AND FOR THE WK ZX81
A superb aid to programming the
ZX81, SPECTRUM, allowing you to watch
what your BASIC programs are doing every
step of the way. Bugs in your program will
be easier to find. Example programs will
almpst explain themselves. Before the
ZX81 SPECTRUM executes each BASIC
statement in your program it will display the
line number, statement number
(SPECTRUM), and the statement itself in
the input area {it will not overwrite the main
display area). The speed is controllable from
single step upwards. You can produce a
TRACE listing on the ZX printer, stop your
program at any point to print variables or
correct errors, and start/stop tracing from
anywhere in your program.
"an effective TRACE . , . a useful
debugging toot . . . easy to use". S.U, 9/83
reviewing SPECTRUM version.
It might even help you find the errors in the
magazine listings!
2X8T M6K! -
SPECTRUM
£5.95
£6.95
THE FUN WITH EDUCATION SERIES
Colourful, fast moving graphics, sound and controlable
difficulty combine to provide a fun way to learn without
the need for keyboard dexterity.
FUN WITH NUMBERS
Addition, subtraction,
multiplication and division in
a space game format. Shoot
down the spaceship carrying
the correct answer, while
building a ladder to rescue
the Man in the Moon!!
For the 48K Spectrum
- £5.50
FUN WITH WORDS
Spelling and Word
Recognition, Use the
overhead crane to pick the
correct letter from the coal
trucks while filling the steam
engines tender with coal and
collecting the passengers.
For the 48K Spectrum
- £5,50
All prices include P.&P., Mail Order from:-
TEXGATE COMPUTERS LTD.,
Dept S., 14, Brook Lane, Corfe Mullen, Dorset BH21 3RD
62
SINCLAIR USER Febntury IBM
c
c
Knitting Pattern =
Stand out in the crowd
with a ZX-81 woolly hat
Celia Sims' computerised knitting pattern for a woolly hat
has advantages over traditional charts
MOST SINCLAIR users are probably
spending the cold, dark evenings hud-
dled around their glowing TV screens
while the sleet and rain rattle against
the windows,
Celia Sims has used those hours to
develop a practical use for her ZX-8Ij a
computerised knitting pattern which
produces an attractive woolly hat em-
blazoned with the message ZX-81 User.
She was the User of the Month in the
July 1983 issue of Sinclair User. A
seamstress by profession, she saw enor-
mous potential in the ZX-81 for provid-
ing time-saving and entertaining
knitting instructions.
She selected the design, colour and
row length of the knitting pattern with
the ZX-81 in mind and she believes that
anyonej except possibly an absolute be-
ginner at knitting, should be able to
follow the pattern easily. Those who are
unable to knit might have friends who
could knit the hat for them.
There are many advantages of using
computerised knitting patterns. As the
instructions appear on the screen
together with the pattern graphics, they
are easier to follow than the normal
printed charts from which the knitter
has to count the stitches.
The pattern also acts as a row
counter, and size adjustments are made
automatically- Finally, as the graphics
on purl rows are reverses^ the current
row of the pattern is always displayed
the same way round as the knitting in
one's hand. That is simpler than the
normal printed charts, when the knitter
has to read from right to left on knit
rows and from left to right on purl
rows.
The only disadvantages are in the
setting-up and loading of the program —
considerably less convenient than mere-
ly opening a pattern chart— and in the
fact that the ZX-81 is less portable and
requires an electricity supply, thus mak-
ing knitting on the bus highly impracti-
cable.
10 REM "ZXiJl USER HPT"
33 PRINT RT
Sh Ltf;"TOL» TOGETHER
310 UJ&Jb 2388
11 PRINT FIT &• ltti "2KEM USER Hfl
II
j2U PRINT Rl Iti^rUUNG UHtTt
J"
34 PRINT RT
t-G^'O-EiLRCK, W-WH
Kl.Pi TO Lfl"aT 'STiTLH"
... PRINT fll 4i l2i "HRTERlflLS"
ITE"
jdb PRINT "PURL iwiLt INTO Lnyi
13 PRINT BT b,b;" PRIONS ULEH1V
rj3 PRINT RT
B,4j "IF YWJ REGUlfi
STITCH"
L CHUNKY"
E t»STINC ON"
340 PRINT AT 12, 1Q; "'. " I Vt2*? |
14 PRINT RT 6,2.1 "1 BRCt ELRlK
48 PRINT RT
9, tf> "INSTRUCT EONS
ST1T0NE
RHO 1 BALL NHlTt"
PRESS 0"
rse coto 1370
i l . print rn ?,4; i, pniR ^>mw <N0€
50 PRINT RT
12,4 j "IF NOT* PRfcS
488 IF ROtl THEN OOTO faUU
;< HEb'L'ttS"
S RuW NUMBER"
41U QQStffi 2£)0tl
l€ PRINT AT 9, 12i "TENSION"
bQ PRINT RT"
I3*?t "REOJIRKJ <i
426 PRINT FfT S* 2 > "PATTERN iNblR
17 PRINT "16 STITCHES AND 22 R
TU " jV-MjBj »>"
UETJONS POLL UN"
UNS Tu 18LM"
76 INPUT R
421 PRINT PIT 10,1, "BOTH COLOURS
IS PRINT FlT i^MJ-'^IZL""
dU IF R<—1
THEN OUTU 70
USED IN EfTLH ROW
13 PRINT AT U,7;"LH1L0 (SUCH
^G IT R>-62
ThLH UjTu ?0
422 PRINT RT 11, I J "TAKE '2PHRE Y
CROWN V
100 IF (K>9
fHfcN OOTO 2^0
RRN LOOSELV RCROSS"
jij PRINT flT 14<?i H flttJLl tSSCM
110 tQSUB 200B
424 PRINT PT 12, 4j "WRONu 6 106
i ROWN>"
120 PRINT FfT
10. &) "U1ING BLACK i
F ERLH ROW
£1 PRINT AT lfc, S; "FOR CHILD il
LAST UN " t V*2+-2tJJ " STITCHES*
43Q PRINT FlT I9,?j"FTJR ""2X8X*"
if PRE.'j'i L' M
ldQ bUSUb 2100
pRE^'i 2"
J 2 PRINT AT lS.bj'TOR K1DLH-T SI
14S LET R-l
440 PRINT RT l7,7i"FOR "O^ER M "
2E PRESS R"
178 IT RV20
[NT ■. P,'2> THEN LET
PRfc/nb U"
■jj IF INKEV *-■''-." THEN uOTu 2?
T8--K2 TOO"
4"J0 IF INKEV*-"U" THEN UOTO 4
24 IF iMKbV*-: >-'R" THEN OUT U di
in] LET n*»"
1 1 1 1 1 1 1 1 1 1 888888888
460 IF iNKEYfO"2* 1 THEN UOTU 4!s
23 LET V-l
otfueoooo&oo mini le&ecwGeaiJisa j. 1
Li
26 CClTU 2*
1 1 eooe in.
*& LL^
? LET v»8
£10 L>1 M ti*-; 14,23 >
470 OU'iUfe 2388
£9 LO'jUB 20tJ0
228 IF R<.=41
UR R>»48 THEN LUTU
471 LET 0«?>«"CZ**** , S*t*l»»** i
3S PRINT AT 2-,l8;"A£JbREVIAT10N
308
#P J*»P i*P ' £t*P ■ 2t l *P 2f »P ' l *P
8"
1 ,'lu 41.0
:j**p >"
31 PRINT RT 3, Vii "K*KNIT°
300 IF RO30
THEN LOTO 480
472 LET E*':b>-"<ti**P t*P 2!**P i
32 PRINT RT 4, IJi "P-PURL*
1 ™
jus LOSUB £881
Continued art page 64
SINCLAIR USER February 1984
61
; = Knitting Pattern
PL
Gnttirtutd from page 63
*P *P ■ 14P £**P i*P 2**P 'liP'iP-i
*4> '3**P y
47 J LET B*<;0= n <5*'*P l*P J*SP l
*P ^ftP ■ iftP "2*sP • ISP '2*4P • 14P >»p i i
*P J**P V
474 LLT b*',4>i ,J <4*SP '14P ■^j+SP ■ i
*P ■ 4teP ■ 2* t s.p ■ 2**P • j.*P ■ J**P '■ "
475 LET a*< 3 >""< 3**P i*P ' 5**P ■ i
*P *P lip 2**P ' l*P "2**P • i*P »P ■ i
4P J*»P >"
476 LET ei^J-^atiP up fitiP'i
*p ■ *p i *P 2*sP i*P ■ 2*sP i *p *p i
ftp ■ 3**P V
477~LET BIK1 >-"'(; 2#*p • &« i *P-4P i
*P '2**P ■ isP '2**P : £*i*P 2*iPisP
J**P )"
47a LET P#-"""IX3i" , "<
400 GUTO 50U
4B5 CLS
4^0 gosub s&ee
4y l LET B*< 7 >»"< t*»p i *P ■ £**P j
tP iP ■ 4* i *P ■ *P ■ 4*t ip ■ »p ■ 4ti *P ■ 2*
*p y
442 LET 6« b >-"'C 2**p i«p ' £#*p t
*P *P 1 *P 2*»P ; l »P ■ *P I »P 4*ftp t
*p : 2**p i ftp ■ 2**p ;■ ,r
493 LET B«5>-\2+sP l tp 2TsP i
sP'fP'itP4*iP isP -4**P : isP 2**P
isP -£#*P V
4*4 LET 0*<.4>«"C2*ftP'i»P 2*»P 1
iP 2*sP 2* i*P £**p 3* i *P £*sP ■ 3*
i*P '-J**P >■
493 LET 0*K i >""< 2*»P ' i*P ■ £*iP i i
sf J*4P 2*i*p *p ItP 4*»P l*P 2*
ip ' isp '2*»p y
4*6 LET B*<2>-"<:2**P' 15P 2*»P 1
*P ■ *P ■ 1 4P 2**P ■ 1 *P ■ *P ■ 1 *P 4**P ■ 1
»P '2#ftP LiP -2**P )■
4*7 LET B* D-"<3*»p'2*l*P'2*»P
■ 4*1 *P *P ■ 4* 1 »P ftP 1 *P 2*aP ! 1 *P
2**P )"
499 LET P** 'M8BR"""
300 FDR 1*1 TO T
510 LET I*«" H
52« FOR J -23 TO 1 STEP -1
■>J0 LET I*- 1 *+&*<: I,J)
540 NEKT J
550 LET B*t 1+7 ?-l*
■see newt 1
6QQ IT R<«40 OR R>-4£i THEN GOTO
see
610 LD5UE 2O00
620 PRTNT nT 2,9(«(»jNi" PAlTb
194 ►■
6 S LUSUC 2200
640 UO'iUE iljOO
650 LET X-R-40
»!s&0 LET Y-0
670 IT R^-INT <fc^2> THEN LET Y
-7
700 FUR 1-1 T[) «
7i0 PRINT tfT 19-1^*01* t+Y.i
72Q NEXT I
7*2 PRINT HT l'j-x^-V;"*"
7;?4 PRINT AT 19-X, 27+V j "*"
730 LET 1-0
740 LET £«0
750 PRINT AT 6,2j3H
THIS PRIMT AT 6i7, '' "i
T€U FUR J-22+V TU 3-V ^TEP -1 ■
770 LET C-C+1
7SO IF a»( X-i-Y , J .i»B*it M+Y < J- 1 > TH
EW i-uTu &40
790 IF Z-« THEN LET (.■•-"H,"
80^ IF 2<>0 THEN LET L*="Bj"
610 PRINT CJC*i
020 LLT L"0
8'je LET Z-NOT Z
040 NEKT J
m* LET L*C+1
e^iO PRINT Lj h M"
atu GOTO 1970
900 )F R'^^V+'by THEN LtlTU LUOta
<>i« l;o l >ub 2000
KM LO^Jb 220Q
9^0 ^U^UB 2300
•J4U L0SU8 24Q0
5(^0 PRINT fiT 10,2; "USING "Jt*»"
".I*;" "jS*>" 1"
960 UJTO 1^70
LOCO IF ROV+60 THEW CUTU 1200
1010 bG-jlJB 2000
I02u GOSUB ^dO0
1030 PRINT AT 10- lil.'Lfl'sT UFF"
lw43 GD'iUE 2100
106O PRINT AT 9,2;"LUNPLETE t W( _i
""^Ol"" S6CI0MS"
1070 PRINT RT ie,7j"flND TWU ""US
ER*" 9ECTI0NS"
1060 PRlhl RT 11.2; "nLTERNRTlNU
H "2xei"" RNU ""U^iER
iG90 PRINT RT 12, 2j "SECTIUKPy, JU
IN TU FORM HflT"
1095 PRINT AT 10,8.1 "HNP SEUl IN E
MM"
1100 ^TuP
120Q IF R<-40 THEN U-'TU 1400
120^} IF R-48 THEN UUTU 1230
1210 IF R>" t i t 3 THEN CiUTO 1230
1220 IF R/2-INT <R^2> THEN tiOTO
140W
1230 GD'iUB 2O00
1£40 U0SU6 £400
1^0 QOSUB 2300
1260 G0SUB £200
1290 PRINT AT 10,Qi"USlNG "*(;*;"
" j TV " " "
1000 PRINT AT ll,0>S»i" T0 LAST
2 STITCHES, ";T*
1010 GOTQ I970
1400 GOSUB 2000
1410 GOSUti 2400
141b GOSUEr £300
1420 GU-iUE 22ytJ
1400 PRINT AT 10, Oj "USING M *G**"
"jSti" TO END OF ROW"
1970 GUSL© 2100
I960 LET R-R+l
1990 GOTO 30B
2000 REM TITLE
201O CLS
>011 IF V-0 THEN LET H»- ,, -L , HILi^"
£012 IF V-l THEN LET H*= ,, -AWJLT"
2020 PRINT AT j 6j ,, ""ZM01 U^ER 1 "*
HAT"jH*
2030 PRINT AT 1 ,6* "KNITTING INST
RULTIGNS"
2040 RETURN
2100 REM CONTINUE
2110 PRINT FIT £0,4* "WHEN YUU HAV
E DONE THIS"
2120 PRINT AT 21j6j"FHE8& t TO I
ONINUE"
2130 IF IHK£Y*0''C N THEN GOTO 21
3U
2140 RETURN
2200 REM STITCH
2210 IF R>-31 THEN GOTU 2240
2220 LET 5«- J, Kl.Pl"
£230 RfcTORN
2240 IF R^SOINT < R^2 > THEN LET
Sa^'KNIT"
2242 IF R^-fiOlNT < R/£ > THEN LET
T*-"K2 TOG"
2245 IF R^2-INT < R^2 > THEN LET T
•-"P2 TGG"
22150 IF R^2-1NT CR/-2 \' THEN LEI 8
•-"PURL"
2260 RETURN
2300 REM RUW
2310 PRINT AT 3.13i"RUU "jR
2320 RETURN
2400 REM COLOUR
2401 IF R-l THEN GOTO 2410
240£ IF F*lR)-P««B-l > THEN G0TO
2410
2403 IF ft*<R-l)-"&" THEN LET L«-
"UIHITE"
2404 IF H«R-1><>"0" THEN LET LI
-"BLACK"
2405 PRINT AT 10, 7; TUT OFF "jC»
J" YARN"
2406 PRINT AT 11,2; "SEW IN LATER
WHEN MAKING UP"
2407 G09UB 21 00
2400 G0SU6 £000
2410 IP R«<R^-"0" THEN LET L*-"U
HITE"
2420 IF A«RX>"0 u THEN LET C»-"
BLACK"
2430 RETURN
2500 REM WAIT
£510 PRINT AT 1 1 ,4j "CPREPFlRING I
NSTRIXTIONSV'
2520 RETURN
64
SINCLAIR USER February 1984
j
tfKWM
Football Manager
Designed by Kevin Toms
This outstanding game of skill and
strategy is now widely available
and you can join the many
thousands ot satisfied customeis
who have purchased the game.
This is no five minute wonder -
you will be playing this game
for hours over many weeks
(we know - our customers ted us!),
Some of the features of the game:-
+ Matches in 3D graphics * Transfer market
• Promotion and relegation * F.A. Cup matches
* Injury problems * Full league tables
+ Four Divisions + Pick your own team for each match
* As many seasons as
you like
* Managerial rating
* 7 skill levels
* Save game facility
L
ii wi ir v
Comments about the game from press
a nd our customers
FOOTBALL MANAGER is the best game I
have yet seen on the Spectrum and my
personal favourite of all the gomes on any
micro ,.. To the ordinary person it is an
excel lent v few of what c on be done I n the
field of computer ga mes Th e c rowning
glory of this game isthe short set pieces of
match highlights which show little stick men
running around a pitch, shooting, defending
□nd scoring ... it i s a com pulsi ve game but
people who connot take game sessions of 9
hours or so, which happened on one happy
Sunday, will be grateful to know that there is
a save to tape' option. FOOTBALL
MANAGER has everything it could . The
L
Action Irom the Spectrum version
•ZMx cuafl,
Home Computing Weekly la B.B3
originator. Addictive Games, certainly
deserve the name Rating: 19 20 (Practical
Computing - August 19fl3]
"When I first received this game 1 spent the
best part of the weekend playing it Since
then I have returned to it more often than
any other The Iruly addictive quality of Ihis
game is the remarkable way If mirrors the
real Football manager's problems
"(Persona I Computer Games - S urn mer
1983)
"It's my own fault you did warn me - 1 am
totally and completely hooked on FQOTBAH
M AN AGER " ( Mr A- Wrig hi - La nc a sh ire ]
it is by far the best software game that I
have seen for the Spectrum (Mr N Lincoln
- Surrey.]
"I congratulate you for a marvellous game
which keeps the player enthralled (Mr N.
Creasey - Genards Cross. J
i am writing to say what a great game it Is. I
have spent over 45 hours on if (Mr. D.
Feam - Gloucestershire.)
Your FOOTBALL MANAGER game Is
terrific" fMr. N. Gumming -West
Bromwich.J
Available from computer software stockists nationwide, including tf^ & WHSMITH (ft
Prices: Spectrum 48K £6.96
ZX81 16K £5.95
|N B. 30 GRAPHICS Mi NOT INCLUDED IN
THE ZXS1 VERSION}.
OVB M t M CHflBfl Odd &5Q
To order by ma 1 1 (p &p tree | send cheques o*
postal orders to:
Akfctiie Games
Albert House, Albert Rood. Bournemouth BH1 1BZ
t Spectrum wemon only
Dealers! For urgent stocks send
/our headed notepaper direct to
our address.
THE TENSION MOUNTS,
THE ADRENALIN FLOWS.
THE ADVENTURE BEGINS.
FOR YOUR ZX SPECTRUM
ItilUfc*
the secret of the Spefl of
Destruction* and defeat the
Warlock. Even with your amazing
nowers of transformation ihe I
JK *> U r runaway dro.d
enters the various domains Oi
ever easing intelligent
attackers. Heart stopping tension
^dsupersmooth animation.
o
• ■■■
-QJ
- - ***«*n
?***
V»-
S ir 5^»«s
S5*v- s-*
u*?^
^
p?
^>< t '
Imagi.
i i ■ . ■■ r *
Dealer Enquiries Contact: Colin Stokes on 05 1 -236 81 00 (20 lines).
FOOTBALL POOLS
PROGRAM
• The program lists oul, in otder of preference. The sixteen most
likely score- draws: also The sixteen most likely homes, draws
and aways.
• II picks oul trie results on the bookmakers' FIXED ODDS
coupons that have been given over- generous odds Calcu-
lates your expected profit'
The program will be initialised to the English arid Scottish
league tables You win be able 10 update these league sables
week by week as results come in — or enter a complete new
set Of "league tables in other words, the program will never
become "oul of date" 1
• All programs are recorded on a top quafity cassette (usually
Sony} and are accompanied with an instruction leaflet giving a
bnet explanation of the theory
NEW LOW PRICES!
Available for the ZX Spectrum (48K) and the
ZX81 (16K) — now only £6-95
HARTLAND SOFTWARE
(Dept. S), 8 Penzance Place,
London W11 4PA.
4SK
WIN
THE
POOLS?
SPECTADRAW 2 - THE BEST SELLING
POOLS PREDICTION PROGRAM
FOR THE 48K ZX SPECTRUM
The program looks at the recent form of the teams playing in each
week's English and Scottish football league matches and then
refers to a large database to see whal has happened in. iha pasi
when teams with similar form met. By combining the lessons
learnt from the past with ihe teams* current league position, the
program generates a draw pr ohebiliiy factor for each match, It cart
thmn identify the matches which are likely 1° yield draws end
output suitable predictions. It will also output Ihe least likely draws
for the benefit of those who prefer the fixed odds lines on
coupons.
Program. 6000 match database [both on high Quality
cassette! and instruction manual £12.95 inclusive.
NEW!!! SPECTASORT -
THE PERM GENERATION PROGRAM
Spectator! takes the 14 most likely and 10 least likely draw
predictions and produces ten B from TO full over perms, enabling
you to complete your pools coupon directly from the screen. The
program will run on its own in 16K r using your own predictions, or
has the unique feature of being abfe to merge with
SPECTADRAW 2 to provide a complete Pools Prediction
package I!
Spectasort program on high quality cassette E4.95 inclusive.
(Cheques JPOs payable to B.S. McAtteyf
SPECTADRAW
1 Cowleaze, Chinnor, Oxford 0X9 4TD
cases at
Smart executive type ease, purpose built , with locks, * ■ ■
special hinges and lift-off lid. (plusp&p)
Internal console allows neat installation ol computer, power supply
and printer in fitted recesses. Provision for housing tape recorders up lo
28cm x 1 5cm.
Aluminium switch panel eliminates constant removal of plugs for both
save/load and power off facilities and provides sockets Tor tape*rceorder
leads, to allow operation in convenient position shown.
All internal wiring and leads supplied to allow easy plug -in installation .
Case lid fitted with shock absorbing foam lo protect components when
closed and with retaining straps for neat storage of mains and T.V. aerial
leads.
£47.45 each (incl. p&p and insurance)
My cheque/ P.O. i'orf
is made payable to rreelnri Designs
PLEASE PRINT NAME AND
ADDRESS
Mj/Mrs/Miss
Address
Please allow up lo 28 days Tor delivery.
jf you are not satisfied we shall ol course
refund your money, il you return Ihe
case undamaged wilhtn 14 days.
SINCLAIR USER February 1984
67
Business Bank Accounts
; ■ ,.. at»te5 v . :■.... ■■■■ maka deMS under 1 7 sub- headings
Snawmem* snrluries tmals (rt a*l Subheadings
ZK SPECTRUM 43K £10.75
Sates Day Book/Ledger
Par alt yum invoices this program v. XI 10 prepare
Bl^lertients o' Outstanding mvo.ces Pi i also calculate VAT
ZX SPtcrfluM 4ffK £10 75
Purchase Day Book/Ledger.
<fii?ps j romcuelu record ^1 .il' your purchases under I 7
SurvtiearJmgs ThrS p alrulale VAT
ECTHUM48K £10 75
Business Packs,
irui Banfc Account Sales Purchas* & Quarterly Anityws program
Z* SPECTRUM 49K £30.00
Stock Control,
Handles 900 kras indudW :lRld> s u' iituu'*' Program has lull
search tardives enabling you In SMSfCh & ihpdaie all linos Ifum one
supple* l[ is al*D posS'hli? In deducL items from HOC*
PECTRUM48K £10.75
Invoicing.
This Proofam uvili pr.nl pul invoices, Calculate discounts and VAT
Trig proaram iaiiI 1 calculale iDtals Irpm unil prices giving) IhG
dlitfipTiOHi ol fai'h uni! price
ZX SPECTRUM 4SK £15,00
Word Processing by Tasman
TaSvrOrBI Two U a powerful word processing flro^ram thai wtl
PErfsrn- d n [h* lunctions avail-able gn large- word processors The
prog^a n* vyi II givlr vou on screen 6d characters pe< tin*
ZX SPECTRUM 48K £13.90
Maslerrllt By Camp&is Systems
This -s one pi the bes! data tyStCfTtS available tn' lh* ZX Spectrum
Th-is program has many uKJS in a small business
ZX SPfCTRUM iHK £15.00
Dlan imbell Syr,''
..lor SpHctfiirn ro sell your products Dlan mill ii«$piay your
.■ n upm 11 diffefwnl lypftttOW, Will scroll in any i1ir f tclion
Z)t SPECTffUM 4BK £7.95
64 Column Generator n* Tasman
You can use 1his program w |hin your programs It) display 64
Hints ol screen
ZX SPECTRUM 16-48K £5-50
by Byle One
Myro'l program will handle uplu 40 employees and
.iare NIC PAYE super a^riuahon and many other deductions
■ -ndiy prograrn and emrernelv'-IPod va(ue
ZX SPECTRUM £19.95
OmnicalC by M..-ro Sphere
■-eel 1pr the ZX Sped rum 48K 99 cotumos 250
<ows
AH IheatKnrti programs include VAT post and packing ft VAT
myoite will t>e Mnl iMith all purchases.
KEYBOARDS £69.99 add £2,00 p&p
PRINTERS.
Ail lh* above programs will now run on a lull sue printer rt>e can
npuy offer you a complete package including JrtiGrlaM and printer
tsrrrrornes inlerlace lot ZX Specrr um £39-14
&EMkG5na GP10QA printer ... £178.25
Epson HK FT printer .,,.. £265,00
Epson FX8D pnoiw £381 .60
Many mher primen SvailabtH send SAE lor details on Scllware and
printers
Plsaseadd VAT id lhe prices ol pnnlerS and mlerlaces and £5.00
lor postage at printers
DfJM
TRANSFORM LTD.
41 Keats Ho Porchester Mead Beckenham Kent
Tel: 01658 6350
Br
^M/^ THE NIGHT SKY
Ifi' (for any Sinclair Spectrum)
wy An observer's guide to the stars
visible from the UK (48 to 58 North)
Discover the fascination of the limitless heavens.
Create brilliant hn-res starcharts with
THE NIGKT SKY and your Spectrum
♦FeaiureowTOOdilteert stars •Smaontuo^dWrTgusherJ
#50con£lellationiKter*iabe #0«f4miondrl»8r8ni5i(yscap«
•S^cokurn^aiasday.r^uTrwiQt* •kteai lot seJ06astraoc3mers and
•J* Make. yiDLK T\' scneeri a mn pianetanum novtcesaitw
Trace the movements of the constellations
minute by minute, night by night
Send £8.90 for cassette and Manual
EPHEMERIS
(for any Spectrum and ZX81 16k)
Simply enter any date, time, longitude, latitude
then select SUN, MOON or planet from the Menu
Printout includes all the information you need :-
# Loca sidereal ijrne • Ascension and dedratjofi. attnude
•Dstetficelfom earth etc. etc. mdaatnuli
• Menu allows selection olanothef time •COr^rjp»^k>7J<Pivitero*nefs
planet etc
Send £6.90 for cassette and instructions
(ZX81 16k) or £7.90 (Spectrum 16k/48k)
STATISTICS I
(for any Spectrum and ZX81 16k)
0Dafla input write ali» Iwemecbop t>M range oldescnplT^stahsUcs
♦TrreeapplcaSonsoHtie'nesI •Coweiafionario regression
•Analysis DUananoefrjnewayi #COPYop^lD:aPnnlier[]wneni
Send £6.90 for cassette and Manual
(any Spectrum, ZX81 16k)
STATISTICS II
(for Sinclair Spectrum 48k)
The second edition of a superb user - friendly program
enabling you to create, edit and analyse your own
numeric database
• Upro 48 vaflabtes. 2,400 items c4 da& •AdrJvanatHe lase-tran^M variables
•E^^VE'reLOADu^ttap^ttiTKiodrivei # Full ranee of descnp&ve and rank cfderslats
• HiabgrarnandCumuiatvelTeouencyO'jye •GcireiaaQn.regiiKacn.siatero^m
|nhi-ns|
Careiaied 'Tiesl
Firsl edition soW to many unwerates,
cotsges and leseardi laboratories m UK
andwotowioe
in hgh resoiUcm graprxs
I COPV-SA^ options tor an fesufc
I N™ tealures \nau3e large r rurnberol
van^tilei imcrodnwe FaaKtes and many
mnorrnpnweniertts
Send £1 2.90 for cassette and Manual
(48k Spectrum only)
Send s.ae, for full list of our scientific, educational, graphics
and games software
Full money back guarantee Trade enquires welcome
Dept. SU, 36 Femwood. Marpte Bridge,
Stockport, Cheshire, SK6 5BE, England.
68
SINCLAIR I r S|R iYkruary 1984
mfm
tri
[nsiruLii^us for graphic? characters are printed in lower-case letters in our
listings. Thfy are enclosed by bracked and separated by colons to
disiin.gu.isti them and the brackets and colons should nui be entered,
Inverse characters are represented by the ktler L 'i" and graphics
characters by "g"- Thus an inverse W would be represented by 'W\ a
graphics W by "fw", and an inverse graphics W by "igV".
Spaces are represented by "sp" and inverse spaces by "isp". Whenever
any character is to be used more [ban once, the number or limes it a to be
used is shown before it, together with a mubiplicanon sign. Tin.
man* six inverse spaces and lL (g4L4*i4:g3)" would he enirred a* a graphic
four, followed by an inverse four repeated four times, ftil lowed by ■
graphics three.
Where whole ward* are to be written in umm Inters they a
the listings as lower-case letters, Letters to be entered in graphics mode on
the Spectrum arc underlined.
Inverse characters may be entered on the ZX-81 by changing to
graphics mode and (hen typing the appropriate characters and on the
Spectrum by changing to inverse video and typing the ■ppfopttKt letters.
Graphics characters may be entered on the ZX-B I by changing to
mode and then pressing symbol shift while the appropriate character
entered. On the SprciruiH graphics characters may be obtained by
changing to giaphies mode and then pressing the appropriate character.
User-de fined graphics will appear m BOfntJ letten uniil the program has
been RUN.
LET SHGTS*50
DIM Hi. 10 J
DIM V' 10 >
LET SB-0
LET SB1-G
LET EF-0
LET FUEL-2500
LET SV-2
LET SH-50
LET flLDES-0
LET SBH1-INT CRND*100 >+l
LET SBV1-INT CRND*3)+i
LET SBV-INT <RN0*3>+1
IF SBV-SBV1 THEN GOTO 125
LET SBH*INT <RND*1O0 )+l
GOTO 1095
CLS
IF FUEL<-0 THEN GOTO 775
IBS IF NOT SB FIND SBH-SH AND SB
V-SV THEN GOTO B35
193 IF NOT SB1 AND SBH1-SH AND
SBV1-9V THEN GOTO 833
205 PRINT "SELECT ONE OF THE FU
LLOWING."
215 PRINT h
225 PRINT j i
235 PRINT **
245 PRINT 4 a
235 PRINT ,i
, STATUS REPORT 1 *
. SHOOT"
i. THRUST"
. ADVICE"
INPUT YOUR CHOICE
265 IF
275 IF
295
295
305
INKEY*-"1"
INKEY«-"2"
INKEY*-"3"
1NKEY«-"4 M
THEN
THEN
THEN
THEN
GOTO 265
GOTO 315
GOTO 150
GOTO 675
GOTO 415
SINCLAIR USER February t384
69
C-tmirnitnl front page 69
313 CLS
325 PRINT " STATU':} REPDR
T"
335 PRINT "FUEL- ";FUEL;" UNITS
LEFT. "
345 PRINT "RMMUNITION- "j SHOTS i
" LEFT. "
355 PRINT "RLIEN3 DESTROYED " J
RLDES
365 PRINT "HEIGHT LEVEL- N >SV
375 PRINT "SECTION- " t SH
3S5 PRINT tttftt n PRESS RNY KEY
TO RETURN . "
395 IF INKEY9-"" THEN GOTO 392
405 GOTO ltib
415 CLS
425 PRINT ,," MY RD VILE IS....
435 IF FUEL<50 THEN PRINT "REFU
EL PRETTY SUUN. "
445 IF SHDTS<2 THEN PRINT "GET
MORE BULLETS VERY SOON. H
455 FDR F-l TO 10
465 IF VCF>>SV THEN PRINT "GO D
OWN A LEVEL TO GET NO-'WF
475 IF VCFXSV THEN PRINT "GO U
P R LEVEL TO GET NO."jF
405 NEXT F
495 IF NOT SB RND RNO< . 4 THEN P
R1NT "THERE IS fl star b**e RT ";
SBVj'V'jSBH
505 IF NOT SB1 AND RND< . 4 THEN
PRINT "THERE IS R *tar bJL** RT N
jSBVI;", "/SBH1
515 PRINT .."KEEP GOING CflPTIN.
SEEK AND DESTROY.
!■
*525 PRINT ,, "SCANNING FOR RLIEN
535 FOR F«l TO 10
545 IF SV-V<F> THEN GOTO 575
555 NEXT F
565 GOTO 635
575 FOR G-0 TO 5
5S5 IF CSH+G*H<F>) OR < SH-G-W F
>> THEN GOTO 615
595 NEXT G
605 GOTO 555
615 PRINT "BRGHH THERE ARE ALIE
NS NERR-6Y. . "
625 'GOTO 555
635 PRINT , , "PRESS ANY KEY TO C
ONTINUE. . ,"
645 IF 1NKEY*-"" THEN GOTO 64S
655 GOTO 165
675 CLS
6S5 PRINT " TO CLIMB PRESS " "U"
695 PRINT " TO- DIVE PRESS ""D""
4
705 PRINT " TO THRUST PRESS ""T
U II
715 INPUT fl«
725 IF A«-"U" THEN LET SV-SV-I
735 IF fl*-"D" THEN LET SV-SV+1
745 IF P*-"T" THEN GOTO £245
755 IF R*-"" THEN GOTO 715
775 IF NOT EF THEN PRINT "YOU R
RE NOW USING *tter9emc* fuel YOU
JUST MIGHT HAVE ENOUGH TO REAL
H R STRRBRSE.THEE YOU WILL BE R
EFUELED AND YOURMISSLES REPL
775 IF NOT EF THEN PRINT "YOU R
RE NOW USING emsr9»T,ce fuel YUU
JII^T MItHT HAVE ENOUGH TU REAL
H R STARBFlSE.THEE YOU WILL BE R
EFUELED RND YOURMISSLES REPL
EN I SHED. "
760 IF EF-1 THEN GOTO 19B5
785 LET FUEL-FUEL+200
795 LET EF-1
SQ5 PRINT "ANY KEY TO RETURN TU
MENU. "
613 IF INKEY**"" THEN GOTO 615
825 GOTO 165
635 CLS
fi45 FOR fl-0 TO 21
B5S PRINT "<30*i*P>"
B65 NEXT R
975 PRINT RT 5i0;"wou have Und
•d At #. *t*rb*s*
£85 PRINT AT 6,0J
895 PRINT "C2*i*P> M
905 PRINT "<4*97 ! 9r}"
915 PRINT " <9* N
925 PRINT " < 98 ' 9r>"
935 PRINT " C9B' 9<0"
945 PRINT " t9t<3*i*P > io>"
955 PRINT "t 96 '94 '96 '93 '91 ' iaP i
9t'i*P i"
965 PRINT "<2*i*P >4tiSf>'«t< i*P >
it
975 PRINT "C8#i*P'9t< i*P )"
905 PRINT rt <s#i»p)
"995 PRTNT "<5*i*P)
1005 PRINT "<5#lmP? FUEL "
1015 PRINT "<5#i»P>
1025 LET FUEL-FUEL+1300
1035 LET SHOTS-SHOTS+20
104.5 PRINT " Aft* ke* to return
to m#nu
1055 IF SBH-SH ANC SBV»SV THEN L
ET SB-1
1065 IF SBHl-SH RND SBV1-SV THEN
LET SB1-1
1075 IF INKEY»-"" THEN GOTO 995
70
SINCLAIR USEE February 1984
1085
1.035
1255
1265
1275
1
GOTO 165-
FOR F*S TO 21
FOR F=l TU 1O0
NEXT F
265
F J R1HT
ILON******* "
1235 PRINT
TO SEEK AND
SPACESHIPS IN
1305 PRINT , , "
AVE A COMPUTER
1315 PRINT , , "
ANY ALIENS IN
YOU GIVE YUU A
******#STRRSHlP EPS
FOR F-l TO
GOSUB 1455
LET H<F}~X
LET V<F)-Y
NEXT F
FOR FM TO
" YOUR MISSION IS
DESTROY 10 ALIEN
YOUR GALAXY. "
TO HELP YOU. YOU H
ME. "
I CRN TELL YUU OF
YOUR RRER/AO'VISE
STATUS REPORT. "
10
PRINT AT 0,F>"<i V'jflT 0,23
l V;AT B,Fj"* r, iAT 0,23+Fj' 4
17, 2; "ANY KEY TU S
1335
1345
1355
1365
1375
1385
1335
+F; U
*"
1405 NEXT F
1415 PRINT AT
TART. "
1435 IF 1NKEY»
1445 GQTU 165
1455 LET X-INT
1465 LET Y-INT
1475 RETURN
1485 STOP
1505 CLS
1515 FOR F*0 TO 21
1525 PRINT "<33*l«l> >"
1535 NEXT F
1545 PRINT RT 7,0J
1SS5 PRINT "t3*i»P' t> >"
1565 PRINT "<5*97 = 9r)"
1575 PRINT " <7*97< i)
THEN GOTO 1435
<RND#i00>
<RND*3+1 >
*= • i -)
1585 PRINT "C 14*96 - 91 >•
1595 PRINT " <9QV
1605 PRINT " <93'OTV
1615 IF FUELO1B0 THEN PRINT "YO
U HAVE NQ ENERGY TU SHOOT. "
1625 IF FUELO0 THEN GOTO 105
1635 IF SHGTS<-0 THEN PRINT "YOU
HAVE NO AMMO. LEFT."
1645 IF FUELOfi THEN GOTO 105
1655 FOR F-l 2 TQ 26
1665 PRINT RT 9, F; "< i>' ib ' i-O"
1675 FOR G-l TO £
1665 NEXT G
1635 PRINT AT 9,F; H (3lilP >"
1705 NEXT F
1715 GOSUB 1H8S
1725
1735
1745
1755
1765
1775
1785
1795'
1805
1S15
1825
1835
1845
1855
1865
1875
1865
1635
1305
1315
RETURN
1325 NEXT
LET G-56
LET A-23
LET 8"A
LET ALDES-ALOES+l
FOR F-l TO 10
IF SH-H<F> THEN LET H(F)»0
HEXT F
UNPLOT t,,A
PLOT G,R
UNPLOT C,B
PLOT o,a
IF R»43 THEN GOTO 165
LET A-R+l
LET S-B-l
LET G-C-l
GOTO 1735
LET SHOTS-SHOTS- 1
LET FUEL-FUEL-5
FOR F-l TO IB
IF H<F>*SH AND V<F>SV THEN
miaaed"
F
CLS
PRINT "
GOTO 175
REM **N0 FUEL**
FOR F«0 TQ 21
PRINT AT F*0J "<3U*isP >"
NEXT F
PRINT AT Bj-0j"wou.r ship ntk
sudden Ptun9e doumu
1335
1345
1955
1985
1335
2Q05
2015
2025
•s *
ards"
2035 LET a*-"0051015202520353045
46554065506560657075708580359036
01060U601261 1361 14621663"
2045 FOR F-l TO LEN Q* STEP 4
2055 LET X-VAL QKF TO F+l)
SINCLAIR USER February 1984
7J
Cenwnttd from ptigt 7!
2065 LET Y-VRL Gi*tF+2 TU F+3>
2075 UNPLDT Y,X
2085 NEXT F
2095 LET fl*-"<i> = i *'!->"
2H35 LET Y-l
2115 LET B*«'X3*iSP ) M
2125 FOR F-l TU 17 STEP .7
2135 LET Y-Y+1.2
2145 PRINT FfT F,Y;R*;RT F,Y;B*
2155 NEXT F
2165 PRINT fiT 10,2j'Nour *hiP ex
PldH** OTTr imPJ,ct M
2175 PAUSE B4
2 IBS FOR F"l TO 30
2135 UNPLQT INT < RND*64 >, INT CRN
D*42 :>
2205 NEXT F
2215 PRINT RT 14, 1>" PREY'S rrM T
PLRY RGRIN ";BT 15,1; "
2225 INPUT I*
2235 RUN
2245 CLS
2255 PRINT "PRESS < J "F"" TO GO FO
RUfiRD PRESS ""B«" TU CO
BACK WARDS IF YOU PRESS RNY
THING ELSE YOU WILL THEN RETURN
TO THE MENU. "
2265 PRINT " TO STOP THRUSTING j
RELERSE THE KEY. "
2275 IF INKEY*-"" THEN GOTO 2275
2285 IF INKEY*« ,f B" THEN GOTO 231
2295 IF INKEY»-"F" THEN GOTO 250
2305 GOTO 165
2310 CLS
2315 FOR F-l TU 21
2325 PRINT "C32*i»P > H
2333 NEXT F
2345 PRINT BT 10. 0>
2355 PRINT "C 1B*1*P ■ 3*97 i< :< l- ■ 3
*97 = 9r>"
2365 PRINT "<13*l*P * i<« i=< W
19 9S) 1 '
2375 PRINT "< 14*i*P ! *»■-»«««»•*«*
23B5 PRINT "(6*isPl/'L*P'99'isP
2395 PRINT "<5*isP'97'
.EPSILON **>"
2405 PRINT "<3*isP '97'
9*< 10*9*)"
2415 PRINT "Ca^iP^U' 9*'
6*9d>"
2425 PRINT "<4*iiP '9f 19*97)
2435 PRINT "< 4*i*P ' 9u ' 21*96 '9q ) PI
2445 PRINT RT 16,25; "t 2*i*>" ; RT
l6,£5> H <2*l*P >"
2455 IF INKE¥*0"B" THEN GOTO lb
2465 LET SH-SH-1
2475 IF SH-0 THEN LET SH-1Q0
2485 LET FUEL-FUEL- 10
2490 IF FUEL<-0 THEN GOTO 775
2495 GOTO 2445
2500 CLS
2505 FOR F-l TO 21
2515 PRINT "<31*isP >"
2525 NEXT F
2535 PRINT RT 10/0;
2545 PRINT "< 5*i*P ; 9e ' 3*97* i* t X }
■3*9?> M
2555 PRINT "<C3*isP'98' W19
2565 PRINT " i*P ' ■■■*»**»««■«»«
2575 PRINT "<9u<
i-'lsP '99 ; ltP ! l} >"
2585 PRINT "<2*isP. . . . , EPSILON. .
97)"
2595 PR INT " < 5* l sP > 3*9d ■ 9* ■
97 ■>"
2605 PRINT "<7*i*P <8*9d s 9a<
2615 PRINT w <14*i*P' 10*9?:'"
2625 PRINT "( 3*i»P 9u ■ 24*96 >"
2635 PRINT RT 16, 5; "< 2*i*> H ; RT 1
6 j 5> "t, 2* i ftp V
£645 IF INKEY*<>"F" THEN GOTO 16
5
2655 LET SH-SH+1
2665 LET FUEL*FUEL-10
2675 IF SH>100 THEN LET SH-1
2685 IF FUEL<-8 THEN GOTO 775
£695 GOTO 2635
2700 SfiVE "S*"
2710 RUN
72
SINCLAIR USER Fabrmry iM4
cherry swipe
AIM YOUR ball ai the over-hang-
ing branches of the cherry tree.
If you are accurate you will
score. There are also bonus points to be
gained as you throw your ball through
the farmer's fence.
Cherry Swipe was written by Barry
Webber, aged 14, of Morden 3 Surrey
for the 16K Spectrum.
1 BRIUHT
2 FOR f*l TU 2' BEEP .3,1 = BE
HP .4,10= BEEP .15.12' BEEP .l& t
l&- BEEP . 12,8^ BEEF ,3,1b- BEEP
.15,12^ BEEP -12,10= BEEP -12,G
« BEEP .12,10' BEEP . 12,8 : BEEP
.IS, 6' BEEP .4,1^ BEEP .3,8 = HEX
T f
3 FOR n™l TU 'J FOR f*30 TO 4
S STEP 2= BEEP .01,fi NEXT f ■ NE
XT n
4 BORDER 8' PAPER 0= INK ?« L
LS
5 LET vc«5' LET hi-0
6 PRINT AT 0,13; INK 2; "CHERR
Y" = PRINT RT 4,6; INK 2;'^; INK
6;" "} INK 3; "20 POINT
S"
7 PRINT RT 6,6; INK 4;'^; IN
K 6;" ."; INK 5; ,J J1y*tery POI
NT"
6 PRINT AT B,0j"Thc man at th
e top of the- screerus moved bv k
eys 5 and BtWhen he-is m line wi
fch * cherry Press 7"' '"The ob;ec
t li to score as many Point* *£■
vou cam The screen will chin
-3e colour after 590 Point*. R*
the Qarne Pro9re**e« you will.
need more Points to 9et in to
the next 'ROUND' . "
9 PRINT RT 2&,7; FLASH 1 ; "RNY
KEY TO CONTINUE"
20 PAUSE Q BEEP .2,6= 8EEP .2
,12
23 FUR f-U'JR (, i" TU U@R "e"+7 '
READ K> POKE f,x< NEXT f
24 DATA 235,253,195,219,219,19
5,253*255
25 DATA 60 , 1 26 , 255 , 235 , 233 , 253
t 126,60
26 DATA 26,6,24,116, 119, U9,7,
27 DATA £4,60,24,253,24,24,36,
66
2B DATA 24, 60, 24, 60,90, 133,36,
66
29 REM Run before tvPin9 more
3Q LET a*=" a aaaaaaaaa
J. 3. 3. 9. 3. 3l" ""
:j4 LET fh-60
33 LET ij.*4 ' LET bb^6^ LET cc~
13 '
36 LET dd*0> LET aa-0
37 LET sc*0- LET *»0
39 LET r-i
40 LET ra-60
41 FDR h™l TO vc CLS
42 FOP f«3 TO 17 STEP 4 ! BEEP
.61,f+iCr PRINT INK aa; BRILiHT
SINCLAIR USER ftftnwr* iflSJ
73
1;AT f,0;**' PRINT INK bb; BRIG
HT 1;RT f+2,i;ji*« NEXT f
44 FOR f«*l TO cc
45 LET ##-INT <RND*3lH"i' PRIM
T RT 19, ee; INK 2)"c"< NEXT f
49 GO SUB 9512)0
50 LET s-1 « LET b-d+1
55 LET 9-INT CRN0*2>+1
SO IF b«l THEN LET b=0
81 IF b>30 THEN LET b-31
82 PRINT RT a.,b; N b"
93 IF sc+s>-50G AND dd=*0 THEN
FOR f-l TQ 5 ! FOR P*40 TU 30 ST
EP -1' BEEP .01,P ! NEXT P' NEXT
T> PRINT RT 21,0; "Score*"; FLASH
1;"508" ! FOR f=l TO 10< BEEP .1
,-5' BEEP .1,-10= NEXT f= PRINT
RT 21,0; "Score™500" ■ LET **»3< L
ET bb*5^ LET cc«8 ' LET dd«l ■ LET
fh-63' LET v/c-4
84 IF sc+s>«lO06 RNL> ZZ-0 THEN
FOR i«l TO 2 = FOR f*l TO 10 : B
EEP ,85*f< BEEP .01,-f< NEXT f'
NEXT i« BEEP . 8,-10 < LET f h=70 •
LET 2***1
65 BEEP . 86,-10 : PRINT RT JUbJ
" " i BEEP -96,-20
89 IF RTTR <a+2,b>*2 THEN RES
TORE '3516' FOR f-1 TO 4' READ J,
k - BEEP J , k ■ NEXT f i CO SUB 500Q
90 LET a**+l* IF SCREEN* <jl+1,
b> w " THEN GO SUB 9800
91 PRINT RT 31 ,0; "Scare"" ; s+sc
99 IF j,>19 THEN GU TO 101
100 CO TO 80
101 FUR f =*40 TU 30 STEP -1 ' BEE
P „01,f ■ NEXT f > NEXT h
103 IF »c+s>-r* THEN GO TO 310
110 CLS
111 BRIGHT 1
112 BEEP ,5#4< BEEP .5*4' BEEP
.5,4- BEEP .8,0
120 PRINT AT 2,0; INK 6; BRIGHT
; FLASH 1 ; " Your Score is"
140 INK 4' PRINT RT 7, 10; so" F
or cherries ,r ' PRINT RT 8,9;"+";s
I " For Squar***"
150 PRINT RT 9,10>"
— H i PRINT RT 10, 10;s+sc; "-TotJLl
»i INK 6^ PRINT RT 14,0; " You
needed
rs
to Get into
PR
INT RT 16,8," Round Number "*;r+
4 | ft $ II
1 .'
164 IF s+sc>hi THEN LET hi-s+s
c
165 INK 4' PRINT RT 19,5; "Today
* Hi9he*t ! ";hi
169 INPUT INK 6; "PRESS ENTER T
PLAY AURIN "jil
171 BEEP ,1,-10= INK ?' BRIGHT
172 GO TO 30
5800 FOR f-1 TO 20' PRINT RT 31,
0; "Score-" ;s+sc 1 LET sc»sc+l 1 BE
EP .07,f+£0i NEXT C- RETURN
5100 LET r*r+l- LET r*-r*+f h - PR
INT RT 21,10;" Rour>d " i FLASH 1
;r< BEEP U-20« BEEP 1,-25= PRIN
T RT 21,10;" Number to beat-";
FLASH l;r*< BEEP 1,-20' BEEP 1,-
25= PRINT AT 21, IS; "
" ■ GO TO 41
9000 IF 9«1 THEN LET b*b-l
9001 IF 3-2 THEN LET b-b+1
9002 BEEP .05,40
9003 LET 9- I NT <RND*2)+l
9804 IF INT <RND*1B>5 THEN
2,40' BEEP .2
A-»+l i BEEP
BEEP .2,40
RETURN
LET d-15
PRINT AT
PRINT. AT
d "« LET
d<3fl)-CJNKEY*
9510 IF INKEY*-"7"
T 0,d; INK 6; " e" i
ETURN
LET
50 '
9085
9500
9502
9503
Ij"
21 ,0; "Score*" ; s+ic
0,d; INK Si BRIGHT
d-d+< INKfc'Y*« M 6" AN
AND d>l >
THEN PRINT A
BEEP .1,30' R
IIC II
9515 GO TU 9503
9516 DATA .5,10,
5,20. .5, 15,1,20
9999 SAVE "CHERRY" LINE 1
74
SINCLAIR USER l-ebruury 1984
SPACE
ZOMBIES
IS
PACE ZOMBIES was written for
the I6K XX-81 by Stuart Cock-
ling of Hemel Hempstead^ Herts.
Shoot the aliens before they reach earth,
As one alien cannot kill you it waits
until two of its companions manage to
pass you. When that happens their com-
bined forces can kill you and you lose a
life. You have a tele porter pack which
you mav use eight times. Use "5" for
left, "8" for ri&ht, "7" for fire and "6"
to teleporr.
1
LET HS*8
%m
LET T-fJ
10
LET A^iO
20
LLT B-14
25
LLT 3™0
30
LLT LI =3
35
LET RLS«0
40
PRINT AT 11,0; "(29*«0 <<
50
LLT c-i
L.U
LLT D-IHT CRNDS30H1
76
LLT r*=" U "
88
LET BS*"Z' !
$\2
PRINT AT R,B;A*
±00
ii
PRINT BT rj,D;B*;AT 0-l#£>J H
101
LET G-C+l
10)i2
PRINT RT C,D;B*;RT C-l,0f"
105
IF C-ll THEN LLT AL'^RL'J+l
106
IF RLS-3 THEM GOTO 250
107
iT C-II THEN GOTO 50
ue
PRINT RT 12,6i"SC0RE=";S;AT
13,6; "LIVES' "jLI;AT l4i3;"ALIEN
'd ON
GROUND' ";ALS;AT Hb.fi/ "NO- OF
TIMES TELEPQRT CRN BE USED "i AT
16.9.
t 1 J
120
IF 1NKEY*-"" THEN GOTO 90
130
LET B«8K INKEVi»"8 N AND B<£
9)-< INKEY*«"5" AND B>0>
140 IF INKEY*-"7 B THEN CO TO 160
145 IF INKE¥*»"6" AND T>0 THEN
PfilHT RT fl,B; B
147 IF IHKEY*-"6" RND T>0 THEN
LET 6-b-l
146 IF INKEY**="6" THEN LET T-T-
1
149 IF INKEY«~"6" RND T<fi THEN
GOTO 30©
150 GOTO 90
160 FOR H-9 TO C STEP -1
170 PRINT RT N#b+l; u («A)"
180 NEttT N
190 IF B+l«=D THEN LET S-S+10
i9i IF B+l-D THEN PRINT RT CD;
<< IP
220 FOR N-S TO C STEP -1
230 PRINT AT NjB+tl" "
240 NEXT N
245 IF B+l-D THEN GOTO SO
247 GOTO 90
£50 LET U*U~1
255 IF Ll-0 THEN GOTO 2B0
260 CLS
270 GOTO 35
260 CLS
2y0 PRINT "YOU RRE DEAD"
360 PRINT "PRESS R KEY TO SEE T
HE INVASION"
305 IF INKEY*-"" THEN GOTO 305
310 CLS
320 LET £*»"<31*izr
330 FOR N"l TO 20
340 PRINT RT 21 , 0; "C 30*9* >"
350 PRINT RT N.O/ZfciAT N-1,0j"
360 NEXT N
370 PRINT RT 0,0 J "THE INVASION
HRS BEEN SUCCE3SFULPLRNET EARTH
IS NOW UNDER. zowbi*. »
. . . - , CONTROL"
380 IF S>HS THEN LET HS»S
390 PRINT " HIGH SCORE' ";HS
400 IF INKEY*""" THEN GOTO 400
410 CLS
420 GOTO 2
500 FOR N-l TO 10
510 PRINT RT R*B+lJ n (ioV l Jf i IT A,
b+li "0"iRT R,B+1; "."
520 NEXT N
530 PRINT RT A,Bj "
540 PRINT RT 0,0; "YOU TRIED TO
OVER USE THE TELEPORT- YOU
EXPLODED INTO MILLIONS OF
1 T9 H
550 IF IHKEY*-"" THEN GOTO 550
560 GOTO 310
SINCLAIR USER February Itm
7 1 )
FACTORS
THIS PROGRAM will list the
factors of any number less than
600 andj where possible, will
draw a diagram on the screen. Factors
for the 16K Spectrum was written by W
Lythgoc of Shcvington, Wigan, If you
delete line 120 it will determine the
factors of any number the computer will
cake.
:.";0 L»U SUB b0a
40 EURDER 1* PflPER 1' INK 7= L
LS
b0 CLi;
60 PRINT " fl INPUT an* number
uP to ^OQ and i will tell y
out its factors. "
6b FUR r\-l TU 8* LET rn=l2+RNU*
12 BEEP „Ij»' BEEP .2, tn' NEWT n
i PAUSE 100
?0 PRINT "
my screen I
icture Of it, "
?b FuR n=l TO €1
16Q
196
1/
NEXT b
IF x«0 THEN PR INI ; FLR'iH
is a Prime riuhbffr.
j 9. *
If it will fit on
will dr aw y ou * P
LET m^
BEEP ,2,m
: l2+RNL>*
NEXT n
196
Sat)
£10
22ti
230
„H S «.
>a THEN PFUNT "
with whole
TO ^b
lfc> BEEP . l,m
SU LET x-u
3b INPUT a
106 IF INT a<
it only works
numbers ! " ■ 1*0
10b CLS
118 PRINT ■
lib PRUSE 106
120 IF a>fc>00 THEN PRINT "Too b
19. INPUT 500 ar less." : UU TO 3
130 FUR b*2 Tu INT < a^2 >
14U LET c*a^b
lbtf IF c*=INT c RND C<-31 AND b<
=20 AND cOl THEN UU SUB 200
t£8 IF c=INT c RMl> cOl THEN Ci
ij SUB U0U
PRINT
press any
15*4 PAUSE
IF INKEY*
GO TO 50
L L'--'
FOR m^l TD b
FUR n*l TO c
PRINT FIT m.n;
240 BEEP .05*11
250 NEXT n
260 NEXT m
270 PRUSE 100
RETURN
PRINT c; "
BEEP 2, 1
LET x^x+l
RETURN
To stop
key. "
Pr
■3o
THEN ST UP
INK £,;"*'
£80
300
J 10
320
330
X
;bj "
J 3.
bOa FUR n~U TU 7- READ
bie PUKE USR "*"+«■*»
52S NEXT n
530 t>RTfl 0.BIN 01 11 11 10 j BIN 011
11H0.BIN 01111110, BIN 0111111a,
BIN 0U11U0,BIH Ullllil0,U
340 RLTURN
6U0 RUN
76
SINCLAIR USER February i9S4
BANK VAULT
10
20
40
50
70
80
1Q0
110
120
138
140
280
210
220
230
240
£50
£60
270
yG0
310
32S
330
332
336
348
350
355
356
DIM
FOR
FUR
LET
LET
LET
LET FKJ,
NEXT J
NEXT I
LET FK3,
fK2i,2i >
1^0 TU 8 STEP
J=l+1 TU 21 -I
R< 1 + 1, J>«l2e
J^^ J, 1 + 1 >-l28
21-1 ;«=12£
2
LET
LET
LET
LET
fl<
4 ,
11
11
>= i
>*0
FK 13, 11 >=0
R< 17,11 >»fl
TO 21
■■1
AC
i-J>>
A< 11, 11 >~140
PRINT
FOR 1*1
PRINT " »i
FOR J=l TO
PRINT CHfi*
NEST J
PRINT
NEXT I
LET M*1500
PRINT AT 11
LET L^20
LET Oil
PRINT fiT L,C; "0"
PAUSE 500
PRINT RT L,L; "G"
LET M*tW0
IF M<0 THEN C.OTQ 606
IF M<100 THEN PRINT AT
22 j "£ ,r jf1
f
"SAFE COMBIMATWl *•
.z 3 z j ;? T s\J - J y-
C^ U1DE YOURSELF round the
^pmazc using the cursor keys to
.1 save the money which is on fire
in the central vault. Bank Vault is for
the I6K ZX-81 by A Manser of St
Albans, Herts.
10,2
U "HURRY"
360 PRINT RT 11,23;M>"
370 LET N*=LODE INKEY*-2Q
380 IF N<5 OR H>& THEN GOTO
390 LET LI-L-CN^O+CN^O
4S0 LET CX-OKN-S>-<N-5>
35ft
410 IF fl<LI,CI>=140 THEN UUTO 5
00
420 IF A<LI,CIK>0 THEN COTO 35
425 PRINT RT L,C;" "
43ft LET L-LI
448 LET C*C1
4S8 COTO 340
S00 PRINT AT 10/22; "¥0U GOT"
510 STOP
6"flB PRINT fiT 10,22; "TOO SLOW"
SINCLAIR USER February 1984
77
LASER TOWER
H HANSEN, aged 1 5, of Aaben-
raa, Denmark wrote Laser
Tower for the 48 K Spectrum.
It is a fast -moving zap-'em game. Shoot
the intruder before he reaches your Laser
tower.
35 LET h£c=£)
37 LET Psi=0
40 LET a -10
43 LET flaPs^lj
4b LET lives- 10
70 LET sc^S
75 LET bQrw.s*20
80 LET liveft*3
9b RESTORE 130
100 FUR h=144 TO 1 50
11 y FUR rt=»0 TO 7< RERO row ! POK
E USR CHR* h+n>rou' NEXT n
120 NEXT h
125 LET JL*^"£24*9e> ,r
I3fe3 DRTR 8,0,39,255,255,39,0,0
140 DATA 7,31, 151,255, 253; 191 -» 3
1,7
150 DRTR 3, 15, 30,63, 255, 25, 14,0
160 DRTR 192,240, 246*252,255/ 15
2, 112,0
165 DRTR 0,0,0,255,255,0,0,0
166 DRTR 17, bS, 1,25,79,8,82,9
167 DRTR 32,68, 17, 12B, 60, 0,66, 1
7
170 CLS ' PAPER 0' BORDER
175 LET ink* I NT <RND*4>+4
180 FUR q-8i TU STEP -1
190 PLOT INK ink;q,0: DRRU IN
K ink, OVER 1 ;253-q+2, 175
195 NEXT q
260 PRINT INK 9; FLASH 0;RT 0,
1 j "INSTRUCTIONS PRESS <* or n>"
210 IF INKEY**"v" GR INKEYt-^Y"
THEN CO TO 250
-20 IF INKEY*="n" OR INKEY*~"N"
THEN CO TO 290
230 CO TO 210
25Q CLS 1 PRPER 0' INK 7' PRINT
RT 0,6; "< 9C ; 9d > Laser tower
1 93. 9b > "
260 PRINT RT 2,0," The object
f the game is to stop the inva
der < 9c 1 9d > before it 9ets to th
e Laser tower- You've 9ot 3 live
■=■. Ever'j time an nwa-der re ache
■» the tower you will die* N
270 PRINT RT 9,0;" 6-UP 7-Do
W'fl 0-Fires"
280 PRINT RT 11 ,4; "GOOD LUCK!";
RT 13/ U" Made b* He^rik R. Hans
*n">flT £1,0; "Press any ke* to co
ntinue"
290 PRUSE
305 BORDER
310 FQR f«8 TO 21 : PRINT INK
>RT f ',0; ,r <J32*i^P_2" : NEXT f
320 FOR f-0 TO 21= PRINT INK 2
;RT f ,26; " f.g*isP > " - NEXT f
330 PRINT PRPER 2; INK 9;RT 4,
28;"L";RT 5,28; "R"; AT 6,29; "S";R
T 7,£8j"E";RT 8,28;"R">AT 12,28;
"T";AT 13,29; "O'^RT 14,28>"W";RT
15,28; "E";AT 16,28; "R"
340 PRINT INK 5;RT 0,7; "HI-SCO
RE ' " ) h*c
345 FOR j-l TO 300 - NEXT J 1 PRI
NT INK 0;fiT 0,7; " ■; 18*isgQ "
350 PRINT INK 6;AT 2 1 , 1 ; " SCORE
,U JK
355 PRINT INK 6>flT 21,13; "LIVE
S » * i 1 lves
370 PRINT PRPER 0, INK 6;RT *,
24; "< 94 1 9b )"
380 PRINT RT a+1,24;" H ;flT a-1
'aSl IF INKEV*-«0" THEN CO SUB
600
382 PRINT RT 4+1,24;" ";AT .1-1
78
SINCLAIR USER Frbrtmry 1984
,24;" "
390 IF INKEY*-"6" THEN GO SUB
500
400 IF INKEY**"7" THEN GO SUB
550
410 IF Psi~l THEN RETURN
420 GO 'SUB 7O0
430 GO SUB 365
5013 LET j.™#>1
51Q IF jl>20 THEN LET a*20
520 RETURN
550 LET 3L*>a.-i
560 IF *<1 THEN LET a = l
570 RETURN
600 LET mk^INT < RND*4 >+4
60S FUR s«0 TO 40 STEP 10 ' BEEP
.001,^' NEXT s
610 PRINT PAPER 0; INK ink; AT
A; J a*
620 PRINT PAPER 0; INK 0J AT a,
8 j ft*
630 IF a»ex THEN GO TU 1080
699 RETURN
700 IF flaP 4-1 THEN GO TG 8O0
705 LET fUPs^l
710 LET e-x«lNT <RND#20H1
720 LET »*e
890 IF e-24 THEN GO TG 300
810 PRINT INK Si PAPER 0;AT ex
, e; ' X9c 3 9d:> "
012 LET Pfii-1
015 GO SUB 365
820 LET tra-INT <RND*3>< LET tr
a^tra-l
825 PRINT INK Q} PRPER 0;flT ex
,«j "(2*tftp )"
830 LET tx=ex+tra
840 IF #x<2 THEN LET ex»2
850 IF ex>20 THEN LET ex=20
860 LET e*e+l
065 LET P*i*0
670 RETURN
900 LET 1 ives* I iwes-1
910 PRINT FLASH 1; INK 4>AT tM
# j " +■+"
320 FOR *-50 TO STEP -.3
930 BEEP .001.*
940 NEXT ft
950 FOR f-0 TG 10 ■■ BEEP .01 jf'
NEKT f
960 PRINT INK 0;flT •*,*; "<_2*is
P V h
970 FOR f-1 TO 25' INK ink = PPI
NT AT iitj" (99'9f :> " ' BEEP .01 /-I
Z- PRINT RT ji.e;" ";AT a,e+l;" "
i INK ink;HT ft, ft; " tgg'SO " > BEEP
.01,32' PRINT AT a,e; NEXT
f
975 LET f'UPft-Q
980 IF Uvtt<l THEN GO TO 1200
990 GO TO 350
1000 FOR f-1 TO 25' PRINT AT a,e
j " <99"9f > " ■ BEEP .01,2^ PRINT AT
_ftjei" "jRT a,e+l>" ";AT ^ej'^9
9 j 9f . V f BEEP .01,-10' PRINT AT a
,*;" " - NEXT f
1010 LET sc-sc+bcmus
1060 LET flaPft-0
1070 LET ffx*0
1080 GO TO 350
1200 PRINT AT lO.il> "GAME OVER";
AT 12,6; "Press V for new 9am* N
1210 IF sc>hsc THEN LET hsc^c
1220 IF INKEV** M y" THEN GO TO 3
7
1230 IF INKE¥*»"fi M THEN STOP
1248 GO TO 1220
9990 SAVE "Laser T. " LINE 10
SINCLAIR USER FAmmy 19&i
7«J
D GIBBS, aged 12, of Sutton
Coldfietd wrcxe African Man-
hunt for i he IK ZX-81. Using
the cursor keys, lure the wild animals
Towards the trap you have built in the
ground. They are not heavy enough to
tall into the hole until they have eaten
each other, so you must u&e all your
cunning to trick them.
\fl
^_
b
LI^T
105 SCROLL
16
LET B-PI-PI
110 LET J»J+CB>J)-CB<J>
28
LET R-CUDE "£"
120 LET E«EKE<flWE>fl;>
36
LET C-INT <RND*CUDE
it ^ n \
130 LET F-F+CFXB>-<F>8.^
3%
LET G-OCGDE "(82)"
131 LET U-CrKG<R>-COR>
40
LET D-INT <RND*OJDE
'"J" 5
132 LET H«H+<H<B.WH>B>
41
LET 1-1 NT <RND*CCiDE
"ttoO" >
140 CLS
45
LET H-INT CRND*OUDE
l, 3 H J
150 PRINT RT fliB; "*"jRT
EiFi "19
46
LET J- 1 NT <RND*LODE
"9*" >
hrjAT IiJj m <; ih^";RT G,Hi
"< i'»>"j
30
LET S-PI-PI
RT C/Dj "0"
60
LET E-1NT <RND*CQDE
" + H ^
160 LET S-S+CQDi "C9i>"
70
LET F-LGDE "3"
170 IF ,R«I RND b-J OR fl-
'E RND B
60
LET R-R-K INKE¥»*"6"
RND R<C
*F 08 R-C RND B»H UR ft*C
RND BO
UDE '
'<")*CQDE "<92>"-< I NKE ¥*-"?"
THEN STOP
rno
R>CDDE "<91 >" )*LODE
»<9g)«
180 IF I-E RNfr J^F AND t«E AND
9&
■LET S-B+< INKEV**"9"
AND B<C
D-F RND G-C AND H-D THEN
GOTO vn
ODE '
'2" >*CQt>E w <«2>*-< INKEY*-"S n
L "23G"
AND
B>CODE "(91 >">#C.QDE
M <«2>«
190 GOTO VRL "80"
100
LET I-I+<fl>l >-<R<i:>
230 PRINT S
N
SINCLAIR USER JMrkdry/flfiW
2b PRPLR
30 CLS > POKE 2360i?,b0 = BURNER
f INK 7= PRPER 6r GU ^UB b0bS
35 GO SUB 2000
40 GO 'JUB 1000
bO BORDER er PRPLR 43 : INK 7
m LET n-lQ
y0 PRINT RT 0,0; "Guess any num
ber'V" from to "jn-liRT 5/26>"
Ri9ht";flT 7, 26; "Wron9" ;RT 9,2bj"
CODE"
*Jb PRINT ; INK 4jRT b,24; ,r < i9b
2 W J iNK 2;RT 7.24; " 1 195 ;■ "
y£ PLOT 207,88' DRfiW 33,13' DRR
W 0,-9 = DRRW -33,0 DRRW 9,y
100 let *=>int <RNi>*n>
200 LET b-INT (RNtmO
386 LET c-INT <.Rm*rr)
400 LET d-INT < RND*n >
415 FOR w-5 TO 17 STEP 2
420 INPUT "Guess fir-fit number ,r
;«
438 INPUT "Guess second number
44Q INPUT "Guess third number "
;9
450 INPUT "Guess fourth number
%h
4b5 PRINT RT w,l3je;f;9jh
468 IF e<.>a. THEN PRINT ; INK 2
>RT 3+«-3, IS; " (,95) n
470 IF e-a THEN PRINT ; INK 4j
RT 3+a-3, 16; "<_950"
480 IF fOb THEN PRINT j INK 2
;RT 3+M-3, 15* j ,f <_95_>"
43© IF f*b THEN PRINT > INK 4 J
RT 3+Y-3, 19 j "<J_3r
500 IF 9<>c THEN PRINT j INK 2
j RT 3+y -3,20; " <9by r
blO IF 9*c THEN PRINT ; INK 4j
RT 3+^-3,20; " C95> ' f
b20 IF hOd THEN PRINT ; INK 2
;RT 3+*-3,2l; " <9by
b30 IF h=d THEN PRINT > INK 4;
RT 3+*-3,21; " <95> "
b3b PLOT 37,81' PLOT 41,61- PPI
SINCLAIR USER Febrtian, 1394
81
NT ; INK 5;AT 19-*^2,2; "<6*i4P>"
610 FOR z*u TO 30
620 IF e*A RND f-b AND 9-c AND
h-d THEN BEEP .03,*' NEXT i' PR
INT AT il,ZSi INK 6; FLRSH Ij*jb
icid' 00 TU 640
638 NEXT v ; UO TU 650
640 PLOT 37,63' PLOT 41/83' PR I
NT RT 19/l2j INK 6; FLASH i; M WE
LL DONE !";flT 20,3," You SM,ved
HOODINI From"; AT 21 , 13> "Drown in
9"
643 PRINT ; INK 7jflT 14/27J "A* J
INK 5; AT 15*26j"b_"jflT 15,2?; "c"
jRT 15,26; "d^'/AT 16,27; 'V 1 j AT 17
,26;'lL"jftT 17,27; ".9_"jflT 17,2£Jj"h
"J AT 13,27; "j/' > GO TO 6B0
650 FDR t=»30 TO 1 STEP -1
660 PRINT RT 11,26; INK 6j FLAS
H i;*.;b/c;d;flT 20,9;"SHRME He Dr
owned" ' BEEP .03, t
670 NEXT t
680 PAUSE 400: CLS ' PRINT j IN
K 6jRT 11, 0; "Do You Wi*h To Try
Rsaim ? Y/-N" ' PAUSE
690 IF INK£Y*" ,, y" UR INKEY**"Y"
THEN CLS « CO TO 40
700 IF INKEY*-"n" OR INKEY**"N"
THEN STOP
1006 PLOT 101,29' DRAW 0,1 10
1005 PLOT 138,29' DRAW 0,110
1010 PLOT 177, 23' DRAW 0*110
1015 FOR 1«14& TO lb STEP -16
1020 PLOT 101,1= DRAW 73,0
1021 NEXT I
103(3 PLOT 15, 31' DRAW 0,64
1040 PLOT 15.31' DRRW 49,0' DRAW
0,64
1030 CIRCLE 33, 64, 7 ! PLOT 41,06 !
PLOT 37/66' PLOT 39,84= PLOT 38
>%2 DRRW 3/0' PLOT 33,76= DRAW
0,-24
DRAW -13, -13
DRAW 13- -13
DRAW 10,0: DRRW
DRRW -10,0: DRA
DRRW 0, 20' DRfl
1060 PLOT 33/52'
1070 PLOT 33,52'
1080 PLOT 39/65'
6,10
1090 PLOT 39/65'
W -6,10
1999 RETURN
£380 PLOT 143,30
W 20, ' PLOT 1 63 , 50 ! DRAW tf / 4Q '
PLOT 143,60 DRRW 20,0
2510 PLOT 71/50' DRAW 13,0' PLOT
78,50: DRRW 0,70= DRAW 10,0' DR
RW -4,-10: DRRW -5 #l i
2520 PLOT 100,90' DRAW -8,10 s PL
OT 100,120' DRAW 10,0' PLOT 130,
120' DRRW 10,9- PLOT US, 70' DRA
W -8,10
2530 PLOT 105,105- DRRW -9,5' PL
OT IS
;5,90- DRRW -3,5
2545
FOR x»l TO 30 • BEEP
>01,K<
PROSE
4' NEXT H
2350
FOR n*7 TO STEP -
1
2560
BORDER n= PAUSE 20:
NEXT «i
NEXT
x< CLS
300O
PRINT ' "The object
i* to 9U
ees a.
4 number code
j in the
correct order , to save
HOUDINX
3010 PRINT J "ENTER one number At
a time, between *nd 9 t.9
3020 PRINT ' "
3030 PRINT ' "
3040 PRINT ' "
3050 PRINT ' "
- ENTER"
6 - ENTER"
3 - ENTER 1 '
2 - ENTER"
0060 PRINT ***** PRESS ANY KEY
TO CONTINUE"' PROSE ; CLS
3070 PRINT '" When *ou h*ve E
NIERed vour number, you will see
which l* correct and which i
•n't, «••*«-"
3080 PRINT AT 5, 10> "0692" i INK 4
jRT 5, 16; " < i95> "j INK 2;RT 5, l?j
" <i95) "j INK 4; AT 5, lBj " C i95> "j
INK 4; AT 5, ISj " t i95) "j INK 2jAT
3, 19; " < 195 r
3090 PRINT AT 7, 16; "Ri«ht" J AT 9,
160 "Wronfl" ; INK 4;flT 7,16;" < i95>
H i INK 2;RT 9, 16 j M (1952" ~~
4000 PRINT J ' " You have 7 cha
nee* to crack the code b*far*
HOUDINI drowns."
40 10 PRINT AT 20, 2 ; "PRESS ANY KE
Y TO CONTINUED INK 5; FLRSH 1;A
T 19/10; M COUD LUCK II"' PAUSE 0'
CLS
3020 RETURN
3050 FOR a-USR "* w TO USR *i m +?
£.060 READ uier' PUKE a, user
5070 NEXT *■ RETURN
5000 DATA 60,126,169,231,201,126
, 102,60
3O90 DATA 0,128,193,162,164,40,2
ft*B
6000 DflTfi 24, £55, 255, 253, 239, 253
,239,233
6010 DRTR 0,129,67,37,26,196,40,
16
6020 DRTfl 239,2355,239,255,0.255,
^35,255
6030 DRTR 9,0.0,0,0,6,15,14
6040 DATA 238, 238, 23S, 238, 230, 23
8/239, lUB
6050 DRTR 0,0,0,0,0,192,224,224
C&m DATA 0/0,60/66/60/0/0,0
82
SINCLAIR USER February 1984
THE HOUSE
THAT JACK BUILT
R
ACE to complete your house
ahead of your opponent. Press
the "s" key to start the dice
rolling and release to stop it. The
House that Jack Built was written by
Craig Mitchell, aged 12, ofMiddleton,
Manchester, for the 16K Spectrum.
10 DIM *ici92>' GO SUB 9000' G
U SUB 9100
20 OLS ■ BORDER 4' PAPER 5' IK
K 9' CLS ■ GO SUB 3300
25 PLOT 132,40' DRAW 0,135i PL
LIT 133/40' DRRU 0, 135
30 DIM h<2>' LET h<l>-l- LET h
<2>-l
35 PRINT RT 0,4> PAPER 1, INK
?i BRIGHT l;"PU«r 1 M ,RT 0.21 J
PRPER £j"Pl*M#r 2"
40 LET Pl-INT (RND*2 5+1
50 PRINT AT 16, S j PAPER PI J IN
K 7;"PLRYER ",Plj M> S TURN"
55 PRINT RT 17, Si PRPER Pi j IN
K 7, "YOU REQUIRE fl"jRT 18, IbiKP
1>
60 GO SUB 9200
70 IF h<Pl>-dic# THEN LET Pq%
-17*CP1*2)' GQ SUB h<P 0*1000' L
ET h£Pl>hCPl )+!
71 IF h<Pl>-7 THEN GO TO 7000
75 IF h<Pl)Odic* THEN GO TO
100
80 LET h<Pl>*KPl>+i
100 BEEP .1,10' BEEP .2,-2' CO
SUB 9300 ' LET P l-P l+£P L«l >~< P i«£
)■ GO TO b"Q
1000 FOR f»iS TO 9 !JTEP -i ■ PRIN
T RT f,Po*+3; INK 2; PRPER 7; t, t_l
0*g*r = BEEP ,01,f' NEXT f
APER 2;' f <9d^";flT 4, U+posj
If 11
>AT
1010 RETURN
2000 PAPER 5 : FUR f-0 TO 5
2010 PRINT RT f+2,Po*+?-fj INK 3
)"<%cj"i- FOR i»Pos+7-f+l TO Po»
+?+?■ PRINT RT f+2, i> INK 3; " < l*
P_>"; ' NEXT i' PRINT INK 3i" C9cO
ii
2020 BEEP .0l,f*3' NEXT f
2930 RETURN
3000 PRINT RT 5,11+P©»; INK 3; P
3, ll+Pos> PRPER bj INK 0j" c,9b> "
:J005 BEEP .1,0
3010 RETURN
4000 PRINT AT 9,4+Po*; INK PIj P
APER 5 J " <9J '9k ) ">RT 10, 4+Po*; w < 9
T^JnO" —
4010 BEEP . 1, 10
4020 RETURN
5000 PRINT RT 3.10+PO4J INK PI;
PAPER 5, " <9J "3k V 'jAT 10, 10+Poaj »
<9l '9mj "
5010 BEEP .1,20
5020 RETURN
£000 PRINT RT 12,7+Po*, INK PIj
PAPER 6 J " (94' 197> "jRT 13,7+Po*j"
<9f '92) " ,RT 14 J 7+Pomj"C99_i»p_)" j
AT 15,7+Pp»; " C^h>9l ) "
6010 FUR f*l TO 30' BEEP .01, -f '
BEEP .01, f" NEXT f
6020 RETURN
7000 GO SUB 9300' PAPER 4
7005 FOR f-1 TO 5' FOR i»0 TO 7'
IF 1-4 THEN LET i-5
?mS IF f*5 AND i-7 THEN FLASH
1 i pCfppp p 1
7010 PRINT RT 16*0; INK u"THE E
NO"
7020 BEEP .04,f+i> NEXT i- NEXT
r
7030 FLASH
7040 PRINT RT 2l,9> BRIGHT 1; PA
PER S} INK 0,"PU*#r "jptj" uiv>»
IF *
7050 PRINT 0; INK lj PRPER 7 J F
LASH 1j" Another 9mm* ? *•
7060 IF INKEY0»'V" OR INKEYt-"a"
THEN GO TO 20
7070 IF INKEY«<>"«" AND INKEY*<>
"N" THEN BEEP .02,4' GO TO 7060
('I'nlrnirt-J ,nrr
SINCLAIR USER February 1984
m
7080 STOP
9800 RESTORE 9010' FOR f-USR "*"
TO USR "m"+7' READ jl < POKE f** 1
NEXT f
9005 RETURN
9910 DRTR 0,0,60*60*60*60*0*0
0,0,0,b0, 60,60,68*60
1,3,7, 15*31*63*127/255
120, 192*224,240,246, 23
9011 DRTR
9012 DRTfl
9013 DflTR
2,254,255
9014 DRTR
231,0
9015 DRTR
5,255,207
9016 DRTR
126, 126,126,0/231*231,
240 , 240 , 240 , 240 , 255 / 25
207 j 255 * 255 , 255 , 255 , 25
5 255 255
9017 DRTR 255/255,255,255,248.24
9*255,255
9018 DRTR 255,255,255,255*31*31*
255*255
9019 DRTR 255,224,224,240,240,24
y, 248,248
9029 DRTR 255,7,7,15,15/15/31*31
9021 DRTR 246/248,240,240*240,22
4,224*255
9022 DRTR 31*31,15,15,15,7*7,255
9100 DIM *»C6,3>' DIM b«<6,3>' D
IM c«<6,3)
9110 LET b«K 1 >»" C 9i > "
9120 LET *#C2?*"C_i*J?"
9130 LET c»C2> M <9b_>"
9140 LET a*<3:>-*<^2> ! LET b*C 3 >-
b*U>' LET cK3)«cl(2?' LET i*< 4
)- "* *" ■ LET c*< 4 )-*•< 4 .*'
9150 LET A*f. 5 > *»< 4 ) ! LET fcnK 5 >-
b*c 1 ) « LET c*< 5 >-*•< 4 > - LET **< 6
>-a*<4)' LET b*<6>**<4>' LET c»
C 6 >**< 4 )
9160 LET ri»«" <94'3*i93 : i*?y ' LE
T «>- ,r (91 '3*03'92V r
9170 RETURN
92S6 INK Pi ' PRPER 6
9218 PRINT RT l7,0,d**RT 21*0;*i
FOR f-18 TO 20' PRINT RT fj0j"
<*5< 195 ) "■ HEMT f
9228 LET dice-INT <RND*6>+1
9230 PRINT RT 20*6* PRPER 7; "Hoi
d »»»*« to *tart "jRT 21 ,£ J "and
rtl***# to »toP "
9235 IF INKEY*<>"»" THEN GO TO
9235
9240 IF die#»7 THEN LET dic*-l
9250 PRINT RT 18* 1 ) **< dic»>J RT 1
9, ljb«tdice>jflT 20, l*c*<dic#)
9260 BEEP .a08/dic*+l9
9270 IF INKEY*-"" THEN RETURN
9280 LET dic*-die«+l' GO TO 3240
9300 PRINT RT 16*0* PRPER 4j»*
9310 RETURN
SOUTH PACIFIC
5 LET tt-12
10 LET R«INT <RND*K>
lb LET B*IHT <RND*X>
20 LET C-R*B
30 PRINT "< 32**7 V
35 PRINT "ENEMY LRRFT IS
MILES
/ D J
RWfiY"
48 PRINT "TYPE FORCE NEEDED TG
FIRE YOUR RX5 MISSILE"
45 PRINT C 32*96 >"
46 PRINT
50 FOR D"l TO 18
55 INPUT E
60 IF E-C THEN GOTO 100
65 IF E<C THEN PRINT E; " I J 3 TO
LOW"
70 IF LXJ THEN PRINT E, " IS TO
Q HIGH"
75 NEXT D
fci5 PRINT RT 19,6;" YOU RRE HI
T"
90 STOP
108 LLS
105 PRINT RT 10,1 j "ENEMY LRRFT
HAS BEEN DESTROYED"
HO PflUSE 130
US CLS
120 GOTO 5
LOST in raid-ocean at night, your
ship's radar is registering enemy
signals dost at hand but your
computer is. malfunctioning. You must
guess the force needed to fire your
missiles. South Pacific for the IK ZX-
81 was written by L Craig af Co An-
trim, Northern Ireland.
S4
SINCIJUR USER Ftbmarv 1S84
ONLY THE BEST BECOME A
* * *
m
,7A?
A SPECTACULAR FLIGHT
SIMULATION OF THE WORLD'S
MOST EXCITING JET FIGHTER
WITH STUNNING 3D COCKPIT
VIEW AND THE MOST
REALISTIC 3D AIR-TO-AIR
COMBAT EVER SEEN ON
THE SPECTRUM!
The SUPREME SIMULATION.,,.
it leaves the rest at the
runway threshold ! !
•:
I
Mr
k- '
EM*#d mpon thi Fts uSAF ptr =up#no«fi pel Ugh'ei
ciudai landing. Itka-QP. lieerino, ° n th * »fol#«i JDi'l
Id air ctim6»l lulhr ■erobgliG furinrmanc* urliHd attack I
□V TNI erwr»y c-msswinrlY lurbulrtnLC landing 41 10Q A|
i cjilnr ?at»ngs * runways 6 beaxiana around' ISftVj^S Arri-
ticiad Horizon Oiriir r *pi| Computsr IL5 tlarjs. ifc.
*y»twn tadio^ol M« jSfSIIC* oempjnbl* - Xampsl on I
AGF Smtl** kiwlkn 7. Prat** 1 othmm 1 KM; maeW* ]
I cod* Compete wrlh lull iratruclsona- and prtoLB notM
■ ,- 'J
7i
W4
,*«3
*
mm
?
-*r
&*
'I
'£7.95:
48k Spectrum
ty- Joystick compatible
r X
K
*4
Pit*,
DfGfTAL
nfegrafio
fill T> RIJ ^"^
Depl. . 22 Ash Church Road, Ash. Aldershot Hants GU12 6LX
AH prices include VAT and p4p (overseas add 55p per cassette) Trade & export enquiries welcome —
AN cassettes carry a lifetime guarantee Mail order or check your local computer store
NIGHT GUNNER ^M FOOTBALL
League
Analysis
Mi
Taxi/
m
NIGHT GUMNER lhp air turtle
scenario where only at»j it***™ 1
Eith miision pushes you to 1he limit
with enemy rigtiieri blanking Imm
nil directions 9Unis atj-lsjmg' — Bt-
plcmrve 3D ground HUck saMi* *nd
them's (HP the riigtit home
Joyincki — Kmpstnn AGF
Sinclair Pnytsti A others
43k Suntlrurrs i !i ;:
i*m!Z' 'Hill '*»!!£'*
-■" i ■ J.T.vjjjj.'rj-s JJ:
FCKJTBAU. Lb»dvub Ansfysts Prn
o,ram — Th* aasy-1-ous* Pools Pis-
diction Program wiiii 3 methods pi
lea" pnrfiiriinncB cuntBty&is S«nply
onEer the nam ria,(yrij mi load your
league ram* dau titse and mi y^ur
Spectrum guide you la y&ut Pools.
se*ection
4fl* Sp*tif um C7.15.
TAXII — AlWlhWf fjiittrtgor iwM',
ii in* bmy town square To in*
noieP The station? Tha quitkpr you
o (ti« Diflger your lip and 1ns Ion
pel'u' you wih unp ftu1 titwarf pi
'eckless drivers — 1h*y ftOTICilr "*l r -
lam*"
A (rustraung test erf your unlk ai j
:'!v«r lyn fpr an (fi* fifni^ 11
■■ . ■ T5 50
SINCLAIR USER ftirwari, /iW?^
85
WILFRED THE HAIRY,
OLAF THE HUNGRY!
So you think you're Quick, Intelligent,
Fast Thinking, Huh?
Try fighting these guys!
ACTION GRAPHICS in your task to conquer
the world.
NEW RELEASE Tor the 48K SPECTRUM.
£5.95 at MICROBYTE
19 Worcester Close j
Lichfield, Staffs.
<*
^ MASTERPLUC
&* ELIMINATES ALL THAT UNTIDY WIRING
TV/ CASSETTE
MONITOR RECORDER COMPUTER SPARE
* Neon on /oft indication.
+ 1 ,S melre lead with moins plug supplied
* Enables 4 appliances to he connected solely, compactJy and
eeonpmi colly into one mains outlet socket.
+ Complete wrth four -special eosy tg connect pJugs no
fnofe to buy,
* Safe complies with FJS 5733 end Electrical Equipment
Safety Regulations, 1975 (amended 1976). ^fcO^
* Easily lifted 1o any surface with screw*, provided _ U«l
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&
Moving up the memory
towards faster graphics
In the second article of his series, John Kerrigan explains some
more machine code routines
LAST MONTH'S article showed
a code routine, S0 } which calcu-
lates the address in screen mem-
ory immediately below a given address
— or the present position. Now I want
to show a similar routine, S2, to go in
the opposite direction — upwards. I
want to explain how SO and S2 work.
Next month we can use them to show a
figure — larger than a character —
anywhere on the screen. In machine
code that figure will be printed much
faster than is possible in Basic.
SO and 52 are very similar. Let us
concentrate on S2 — in figure one —
with this. On Entry under the specifica-
tions states: U HL must point to an
address in the Spectrum screen mem-
ory." Both H and L are registers on the
Z-80 chip. Such registers are not part of
internal memory addresses. They are
held on chips separate from the Z-80-
They can be thought of as boxes just
large enough to hold numbers within
the range to 255 with labels on the
outside of each box running from
0000H to FFFFH — or, in the case of
16K Spectmms, running from OO00H
to 7FFFH. In normal counting the
labels run from to 65535 — or to
32767, Spectrum screen memory- runs
from 4000H to 57FFH,
The main registers on the Z-80 chip
are A, B, C, D, E, H and L. There are
other registers but we can let them look
after themselves for the moment. Each
of the registers can hold a byte. We can
use B and C, D and E and H and L as
register pairs when we want to hold a
two-byte or 16-bit number. Each ad-
dress is a two-byte number. So the entry
condition of S2 means that H must hold
the high byte and L must hold the low
byte of a number between 4OO0H and
57FFH, The condition would be met if
H held 53H and L held 9CH.
Moving down to the routine, the first
line sets the position in memory where
the routine will be assembled. In the
case of S2, the origin (ORG) is 7100H
— counting in hexidecimal to base 16 —
or 28928 in normal counting. The sec-
ond line starts with the address in mem-
ory to be loaded with the code —
7I0OH. The next column shows the
code 7CH, which is 7 x 16+ 12= 124 in
normal counting. The third column is
the line number (110), the fourth col-
umn has the label which is the title of
the routine (S2) and the fifth column
shows the assemblv language instruc-
tion (LD A,H),
Page 185 in the Spectrum manual is
part of Appendix A which lists the
Spectrum character set and the machine
code instructions. Nest to number 124
on that page you will see that that value
as a character is a vertical line. Under
the column headed Z-80 Assembler is
the instruction in our routine: **ld a,W.
There is another column on that page
headed "-after CB". In that column on
the same row is the assembler instruc-
tion "bit 7>h". We will deal with that
instruction later.
For the moment it is worth noting
that any number in an address in mem-
ory could be interpreted in a variety of
ways. If it is in the middle of text, it
could be a character. It could be a
variable — a number in its own right. It
could be a part of one instruction or it
could be the whole of another instruc-
tion. The way in which the Z-80 de-
cides to interpret any number in
internal memory depends on which
other numbers it has interpreted imme-
diately prior to that one.
"LD H,L" copies the 8-bit number
(byte) held in the H register into the A
register. If the A register holds 22H and
the H register holds 53H, then, after
"LD A,H'\ both the H and the A
register will hold 53H. The number
22H held previously in the A register is
then lost. So one must hope that it was
either unimportant or was saved else-
where.
The third line contains the two-byte
instruction E607 - AND 7. E6H is the
AND part and 07H is the number to be
ANDed. All AND instructions use the
Figure I.
SPECIFICATION S2 - Spectrum.
GENERAL DESCRIPTION: Takes an address in screen memory and returns the address of the
scan immediately above unless the original address wa* on the top scan of [he screen.
ON ENTRY; HE BUM point to an address in the Spcctfuffl screen memory.
ON EXIT: If the entry III. «S not on the tap scan of the screen ihen the zero flag is re-set and the
csil HI. will be one scan above the cnlry HL. If [he entry HI- was on [he top scan of ihc screen then
the zero Hag is set and the cxir HL will be the same as the entry HL.
USES: A, D, E t H, L.
7100
OOIDO
ORG 710OH
7100
7C
00110 S3
1 I) A,H
;LOAD MSB
7101
E607
00120
AND 7
;TOP S BITS NOW ZERO
7103
CA0871
00 130
JF Z,TOLl
;MUST BE ON TOP SCAN OF CHR
7106
25
00140
DECH
;MOVE UP 1 SCAN
7107
C9
00 150
RET
7108
7D
00160 TOLJ
LDA,L
;LOAD LSB
7109
E6E0
00170
AND 0EQH
; LOWEST 5 BITS NOW ZERO
71 OH
CA1371
ooiao
JP Z,TOSE
iMUST BE ON TOP SCAN OF SECTOR
710E
I1E0O6
00 tw
LD DE.06EOH
7111
19
00200
ADD KL,DE
7112
C9
00210
RET
7 1 1 3
7C
00220 TOSE
LD A,H
7114
FE40
00230
CP 40H
7116
C8
00240
RET Z
;ON TOP SCAN OF SCREEN
7117
1)2000
00250
LD DE t 0020H
7I1A
Al
00260
AND A
;RESET C FLAG
- 1 in
ED52
00270
SBC Hl.,OE
711D
C9
00280
RET
0000
00290
END
ooooo
TOTAL ERRORS
52
7100
90110
TOLI
7108
DO 160 001 Ml
TOSE
7113
TO220 00180
90
SINCLAIR USER February 1584
Figure 2.
Hex decimal
la binary conversion
Hex
Binary
dig][
equivalent
WOO
]
OODI
2
OOIO
1
0011
4
0100
5
0101
6
0110
7
0111
i
1000
9
1001
A
1010
B
1011
C
1100
D
HOI
E
1110
F
1111
A register. They are sometimes referred
to as masking instructions because ihey
have the effect of leaving a part of the
previous contents of the A register
while cutting-off other parts.
To see the effect of an AND instruc-
tion, both the numbers must be ex-
pressed in their binary form.
Fortunately there is an easy relationship
between binary — counting to the basc
2 — and hexadecimal — counting to the
base 16. Each hex digit converts into
four binary digits. The conversion for
the 16 hex digits is shown in figure two,
which shows the equivalent of 5 is 0101
and the equivalent of 3 is 001 L If the A
register contains 5JH, the binary equiv-
alent will be the two joined — that is
0101001 1, Using the same process, the
binary equivalent of 07H is 0O0001 1 1.
The AND instruction will compare
each binary digit or bit of the number in
the A register to its equivalent digit in
the mask. Only if both digits are Is will
a 1 be left in that bit of the A register. In
all other circumstances a is placed, or
left, in that bit of the A register.
In Our example the only bits in
0101001 ] and 000001 11 where both
digits are Is are the lowest two. So, if
the A register holds 53H before "AND
7", after the instruction the A register
will hold 0000001 I in binary (or 03H).
The instruction has the effect of mask-
ing the topmost five bits and setting or
re-setting the zero flag within the Z-H0
chip. The zero flag will be set if the
result of the operation is zero. It will be
re-set otherwise. In that case it will be
re-set because the result is not zero.
The zero flag is relevant to the effect
of the next line :"JP Z.TOLI". That is
the assembly language equivalent of
"Jump, if the zero flag is set, to the line
in the program denoted TOO". TQLI
is a symbol devised especially for this
routine; it is not part of standard assem-
bly language. It is intended to imply
that this branch is made if the original
HL points to the TOp or a character
Line.
The second column shows that it has
been assembled as CA 08 71H. The
first byte (CAH) is the instruction jump
if the zero flag is set. The following two
bytes (08 71H) tell the Z-80 where to
jump to. In standard Z-80 fashion ihey
are back to front; the address with
TOLI in the symbol column is 71 08 H.
Last month the organisation of the
Spectrum screen was described. In each
sector the top scans of each of the eight
character lines are stored first. In sector
the lop scans run from 4000H to
40FFH; in sector 1 the top scans run
from 480OH to 48FFH; and in sector 2
the top scans run from 5000H to
50FFH. So the most significant bytes of
each of the top scans of those sectors
will be 40H, 48H or 50H - in binary
01000000, 01 00 1000 or 01010000. In
each case ANDing with 7 (000001 1 1)
gives the answer 00000000 and sets the
zero flag.
In our example the MSB was S3H
which means that it lies on the fourth
scan of a character — or scan three if
counting begins at scan 0. The zero flag
was not set and so the jump to TOLI
would not be made and control would
pass to the instruction on the next line
:DEC H. DEC is short for DECrement
— that is take one off the number stored
in the H register. The next line is RET;
that is RETurn to whichever routine
called by S2. In this case HL would
contain 529CH on return.
Let us take another example entry
HL. Let it be 4865H, which is on the
top scan of a character position. The
zero flag would have been set by AND 7
and so control would have been passed
to the byte at 7108H (TOLI), That byte
is 7DH - LD A,L; so the A register will
be loaded with the contents of L, in this
case 65H, whereupon there is another
AND instruction. In this case : AND
E0H, The extra in figure one is
required by some assemblers to indicate
that the E is the hexadecimal number
and not the start of a symbol,
E0H is 111000O0 in binary. So this
time it is the lowest five bits which will
be masked. Once again a jump will
depend on whether the zero flag is set.
This time the jump is to TOSE which is
intended to imply the TOp of a SEctor.
Each character line consists of 20H (32)
characters, each of which is one byte
wide. So [he top scans of the first line of
characters in sector will run from
4000 H to 401 FH; in sector 1 they will
run from 480OH to 481FH; and in
sector 2 they will run from 5000H to
50IFH.
In each case the range for the least
significant byte is from 00 H to 1FH —
that is 00000000 to 0001 1 11 1 in binary.
Thus, if the entry HL points to the top
scan of a sector, ANDing with 0EH will
result in zero and set the xero flag.
In our example, where the entry HL
is 4865H, the LSB will be 01 100101 in
continued on page 92
Figure 3.
SPECIFICATIONS DOSC - Spectrum.
GENERAL DESCRIPTION; A routine which rests SO. The routine reads the present screen
position held in byte variable VI loads ihat posti/DQ will zero (paper), cails SO (down a scan), re-sets
VI with (he new preseni position and then loads the new preseni position wiih 255 (FFH nr ink).
ON ENTRY; SO must be in memory starting ai 7000H. Addresses 705OH and 705 1 H (Variable VlJ
DWM be |«ded wjth a valid addresN in Spectrum screen memory.
ON EXIT: If the entry Pilue stored in VI was on the bottom scan of [he screen, then (a) the exit VI
will equal the entry VI and (b) that address will be loaded with KEH, If the entry value stored in V)
was on any scan of ihe screen other than ihe but [urn ictn, then (a) the exit VI will be ihe scan below
the entry VI, (b) the entry VI will be loaded with and (c) the exir VI will br loaded with FFH.
USES: VI, A, D, E, H, L{Nore thai, all hough this routine may appear to use only H and L, it also
uses A, D and E because ii tails SO.)
.LOAD ['KHSI-MT POSITION INTO HI.
;SET PRESENT POS TO PAPER
;DOttN A SCAN
iRECORD NEW POSITION IN VI
;SET NEW POSITION TO INK
7D4D
00100
ORG 704OH
7040
2A5070
00110 DOSC
LD HL,(V1)
7041
3600
00120
LD <HLJ,0
/n-h
CD0070
00130
CALL SO
7D4B
225070
00140
l.D(Vl),III.
704H
16FF
0OI50
I.D(HL).0FFH
?iUD
O
00160
RET
7000
00170 SO
EQU 7000 H
7050
ooieo vi
FNQ 7050H
0000
00190
END
00000 TOTAL ERRORS
DOSC 7040 Ml 10
SO 7000 00170 00130
VI
7050 O0JSO 00110 00140
SINCLAIR USER February 1384
91
s Machine code
continued from page 91
binary. ANDing with EOH produces
01 100000 and thus the zero flag will be
re-sct and the jump will not be made to
TOSE. Instead, control will pass to the
next instruction : LD DE,0&E0H. That
instruction LoaDs the D register with
06H and the E register with EOH. The
following instruction {ADD HL,DE)
adds the contents of the two register
pairs HE and DE and returns the result
in the HL register pair.
In that case, before the ADD HL,DE
instruction, HL will contain 4865H and
DE will contain 06E0H. After the in-
struction, HL will contain 4F45H, DE
will still contain 06 EOH and the zero
flag will be re-set, because the result of
the arithmetic was not zero. 4865H is
on the top scan of character row 2 of
sector 1. Counting in the normal way
from the top of the screen, that is the
1 1th row of characters, 4F45H is on the
bottom scan of character row 1 of sector
1.
Let us take a third example of an
entry HL, Let it be 501 9H which is on
the top scan of a sector. In this case the
jump would have been made to TOLI
and so would the jump have been made
to TOSE. At TOSE the A register is
once again loaded with the contents of
the H register — in this case 50H.
The next instruction is :CP 40H.
That is the assembly language equiv-
alent of "ComPare the contents of the A
register with 40H". Such an instruction
will not change the numbers held in the
main registers but it will affect the flags.
If the number in A is 40 H, the zero flag
will be set. If it is not 40H the zero flag
will be re-set.
We already know that if the MSB is
40H and we are on the top scan of a
sector we are at the top of the scree n.
There is no way of going higher and so
the next instruction RETums if the
zero flag is set, LD DE,0020H in line
250 is similar to LD DE,0GE0H in line
190 but AND A in line 260 is strange.
AND A has no effect at all on the A
register. It is ANDing the number in
the A register with itself. The only
effect it has is on the flags, In particular
ir re-sets the carry flag. The reason that
this odd instruction appears is that the
nest instruction (SBC HL,DE) is a
"subtract with carry".
If the carry flag is re^set, it will equal
O. That will mean that the "subtract
with carry** becomes a simple subtract.
It is usual to find the two instructions
AND A and SBC HL,DE going
together because the Z-80 instruction
set does not contain a simple 16-bit
subtract and so that combination of
instructions is used to achieve the same
effect, As with the ADD instruction
which used HL, this pair of instructions
will take the number in DE away from
the number at present in HL and return
the answer in HL.
In our example, where the entry HL
is 5019H, subtracting 0020 H will leave
HL holding 4FF9H. The entry position
was on the top scan of sector 2 and the
exit position will be on the lowest scan
of sector 1.
We must test SO and S2 to prove that
they work. Figure three contains a sim-
ple routine (DOSC) which will set to
paper the present screen position, then
call SO to find the scan immediately
beneath the present position, set that to
ink and then return to Basic. Figure
four contains a similar routine (UPSC)
which will move in the opposite direc-
tion, upwards with S2, Figure five,
contains a Basic program to enable us to
move an ink line up and down the scans
by pressing the "U" and "D" keys-
• John Kerrigan runs courses in Z-80
Assembly language. Details from Alliga-
tor Data Ltd 01-674 8512,
Figure 4.
SPECIFICATIONS UPSC - Spectrum.
GENERAL DESCRIPTION: A routine which lesis S2. The routine reads the present screen
posilion {held in 2-byte variable VI), toads that position will ?.ero (papery calls 52 {up a Kan), IHM
VI with [he new present position and then loads the new present potMon with 255 (FFH or ink).
ON ENTRY: S2 must be in memory starling at 7I0OH. Addresses 7050H and 705 S H (Variable Vl>
must be loaded with a valid address in Spectrum screen memory.
ON EXIT; If the entry value Siored in VI was on (he top scan of the screen, then the exit VI will
equal i he entry V I and that address will be loaded with FFH lithe entry value stored in V I was on
any scan of the screen mher thin the top Stan, then the mit V I will be the scan above the entry V I
the entry VI will be loaded with and (c) the exit VI will be loaded with FFH
USES: V 1, A, D, E, H, L Note that although this routine may appear W use only H and L, it also
uses A, D and E because il Calls S2.
7030
00100
7030
2A5O70
00110 UPSC
7033
3600
00120
7035
CDO071
00130
7038
225070
ooi in
70 IB
36FF
00150
70 3D
C9
00160
7100
00170 S2
j'OTO
00180 VI
0000
colon
ORG 703OH
LD HL,{VI)
LD (HL),0
CALLS2
LDfVlkHL
LD (HLX0FFH
RET
ENQ 7100B
ENQ 7D50H
END
iLOAD PRESENT POSITION INTO HL
;SET PRESENT POS TO PAPER
;UF A SCAN
;Rj-XORD NEW POSITION IN VI
;SET NEW POSITION TO INK
00000 TOTAL ERRORS
S2 7100 001 70 001 30
UPSC 7030 00 110
VI
7050 00180 00110 00140
Figure 5.
Basic Program to test SO and Si.
10 REM SET STACK BELOW MACHINE CODE
20 CLEAR 28671
30 REM SO MACHINE CODE
40 DATA 124,230,7,254,7,202,10,1 1236,201, 125,230,224,254,
2 24,202,25, 112,1 7,224,6, 1 67 ,237,82 ,20 1 , 1 24,254,87 , 200, 1 7, 32,0,25 ,201
50 REM POKE SO INTO MEMORY
60 FOR A -28672 TO 28705 ; READ B ; POKE A,B : NEXT A
70 REM UPSC MACHINE CODE
80 DATA 42,80,1 12,54,0,205,0,1 13, 34,80,1 12,54,255,201
90 REM POKE UPSC INTO MEMORY
100 FOR A = 28720 TO 28733 : READ B : POKE A,B : NEXT A
1 10 REM DOSC MACHINE CODE
120 DATA 42,B0,I 12,54,0,205,0,112,34,80,112,54,225,201
130 REM POKE DOSC INTO MEMORY
140 FOR A = 287 36 TO 28749 : READ B : POKE A,B : NEXT A
150 REM INITIAL VALUE OF VI
160 DATA 16,72
170 REM POKE INITIAL VALUE OF VI INTO MEMORY
180 FOR A -28752 TO 28753 : READ B : POKE A.E : NEXT A
190 REM S2 MACHINE CODE
200 DATA 1 24,2 30, 7,202,8, 1 13, 37,20 1,1 25,230,224,202, 19,
1 1 3, 1 7,224,6,25, 20 1 , 1 24,254,64, 200, 1 7 , 32,0, 1 67,237,82,20 1
210 REM POKE 52 INTO MEMORY
220 FOR A-2S928 TO 28957 : READ B : POKE A,B : NEXT A
230 PAUSE
240 IF INKEY = "U" THEN RANDOMISE USR 28720
250 IF INKEY-'TJ" THEN RANDOMISE USR 28736
260 GOTO 230
92
SINCLAIR USER February tW4
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| SU2B
E3
Swinging into action
with Jungle Trouble
In the second of our new series on best-selling programmers^
Nicole Segre talks to Mike Richardson about his latest efforts
THERE WAS very little public-
ity about the appearance of a
Spectrum game called Jungle
Trouble towards the end of last sum-
mer but in a few months it had become
a sudden best -seller, over-shadowing
many more spectacular arcade games by
i! quiet combination of wtt and original-
ity.
Jungle Trouble Features an intrepid
explorer attempting to make his way
through a tropical forest. Among the
difficulties he must overcome are a se-
ries of stepping stones across a croco-
dile-infested river, a thicket of trees
which he must chop down despite the
persistent efforts of a horde of monkeys
to run off with his axe, and Tin ally a pit
of flames which he has to swing across
on a rope in a manner of which Tarzan
would be proud.
The author of this eventful game is
26-year-old Mike Richardson, an unas-
suming former chemist from Welling-
ton, Somerset, for whom Jungle
Trouble has meant an unexpected
change of direction .
Richardson began writing the pro-
gram for his amusement when he was
working as an analyst in the laboratories
of Aerosol International at Taunton.
"My wife Jane suggested the stepping
stones," he says, "and I just took it
from there," Richardson started the
program in Basic but when he saw an
advertisement in the local paper asking
for machine code programmers he
quickly converted what he had done
into machine code and applied for the
job. The outcome was his present asso-
ciation with Durell Software and its
founder-director, Robert White. White,
who had been working as a computer-
aided design specialist for Oxford Area
Health Authority, had left his job and
set Up the company a few months earli-
er.
"I was bored with being an em-
ployee, 1 ' he says, "and wanted to try my
hand at writing software." With a sister
company selling business computers as
a staple, White began by writing edu-
cational programs.
He soon realised that to sell his wares
he would need to advertise and that it
would not be economic to advertise for
the small amount of software he could
produce on his own. Hence the adver-
tisement which Richardson answered,
along with 10 other programmers who
work for Durell Software, which is
based on the barn-like top floor of a
Georgian building m the heart oT Taun-
ton.
Richardson soon left his job at Aero-
sol International to work for the com-
pany full-time but most of the team
works only part-time. "Everyone is paid
from royalties." White explains,
"which means they can do as much or
as little as (hey like. It also creates a
happy state of affairs in which nobody
can tell anyone else what to do."
Richardson's first task for the com-
pany was to convert a last-selling game
for the Oric, Harrier Attack, for the
IftK Spectrum. The mskni which
Richardson wrote in a record-breaking
two-and-a-half weeks soon out-sold the
original — more than 17,000 copies so
far compared to 10,000 for the Oric
version.
Its success was due not only to the
fact that more people own Spectrums
than Orics. Richardson's version had a
number of new features, such as a
baling-out option and a hall of fame for
players to enter their scores, and its
graphics were far more sophisticated.
The theme also made it a prime
candidate for some concerted advertis-
ing. Based loosely on the classic arcade
game of Scramble, Harrier Attack fea-
tures jets, battleships and aircraft carri-
ers and, appearing soon after the
Falklands crisis — even though White
swears it is set "nowhere in particular 11
— the game was bound to attract a good
deal of attention.
Meanwhile, Jungle Trouble, which
appeared at almost exactly the same
time as Harrier Attack for the Spec-
miiii, was allowed to make its way to
the top of the charts. Despite the lack of
9S
SINCLAIR USER February I $84
advertising, it did not remain unnoticed
for long.
Although simple in concept, Jungle
Trouble boasts a number of amusing
details which stamp it as out of the
ordinary. At the start, the three mon-
keys which perpetually harass the ex-
plorer nun do to the screen and line up
on the leftj followed by three little stick
men, representing the explorer's three
lives, who line up on the right.
True to life, the explorer's axe be-
comes blunt as he chops down trees, so
that he keeps having to return for a new
one. Best of all are the graphics, with
the hero leaping over stepping stones,
chopping down trees and scuffling with
monkeys in a most realistic way. When-
ever he falls into the river, he does so
head over heels, and it is worth persist-
ing with the game just to see him
swinging on his rope over the pit of fire.
Richardson, who claims he cannot
draw, says there is no secret to creating
good computer graphics. "AJ1 you need
is loads and loads of graph paper,*' he
says, Nevertheless, he persuaded his
wife to run up and down the road to
make sure the explorer's running move-
ments were depicted accurately, and
took endless pains over the 12 pictures
needed to show him falling head over
heels into the crocodile- infested river.
Altogether, the graphics for the game
occupy about 3K of memory and ab-
sorbed much of the two months Rich-
ardson needed to finish the program.
Richardson cannot explain what lies
behind his computing skills. He had a
steady but undistinguished career at his
Wellington comprehensive school,
where he loved chemistry and hated
sports. "I was only average at math-
ematics," he says, ''but contrary to
what most people think, you do not
need to be a mathematical genius for
computing unless you intend to write
mathematical programs."
After passing seven O levels, Rich-
ardson left school at 16. "It never oc-
curred to me to stay on for A levels," he
says, "and nobody suggested it." He
continued to study chemistry on day-
release from his job and is following a
"You do not need to
be a mathematical
genius for computing
>)
degree in the subject with a project for
his MSc
Richardson was introduced to com-
puting when he was working in the
quality control department at Aerosol
International. The manager of the de-
partment asked him to write two simple
programs for the analysis of laboratory
results on the company's Hewlett- Pack-
ard machine. Later, when the machine
was replaced by two Pets, intended for
what Richardson calls "a bigger and
better" computerised weighing system,
he wrote the program for that, too.
Then he was "totally hooked".
Richardson's first computer of his
own was a Science of Cambridge MK
14 kit which cost £3D. It had 256 bytes
oi memory and a tiny +K monitor but
Richardson says that this predecessor of
the ZX-80 was the best possible intro-
duction to computing.
"It was only a bare board, so you
could see exactly what was happening,"
he explains. "It was programmable in
machine code, which meant I could use
that before 1 knew Basic — an excellent
grounding."
Richardson bought a ZX-8I as soon
as it was launched but says he never
really took to it and he sold it as soon as
the Spectrum appeared. He feels (he
Spectrum is excellent value, even
though the long-delayed delivery of a
Microdrive, which he was anticipating
when he bought the machine, has been
a sore point.
His programming and chemistry
studies take most of his time, leaving
little for any other hobbies or interests.
"Previously, chemistry was my work
and programming was my hobby. Now
it is the other way round," he says. He
still bates all forms of sport and very
rarely plays other people's computer
games but that does not prevent him
having firm ideas on what constitutes a
good game.
"The main thing is for a game to look
good," he says. "It must also have some
objective and provide a wide range of
skill levels, so that you can always reach
that objective, however inexpert you
may be."
Richardson claims he is a player of
only moderate skill. "I used to be able
to play Jungle Trouble very easily but
then I decide to make it more difficult
and even 1 have difficulty with it now."
Durell Software has high hopes of
Richardson's latest production, a game
called Scuba Dive, which occupied
him for four months before it was re-
leased in December. The game features
a diver who plunges to unfathomable
depths, avoiding sharks, squid, electric
eels and shoals of fish. Scattered about
the ocean bed are huge clams and oyster
shells containing pearls, which score
points when you pick them up, and at
the bottom, in a cavern guarded by a
giant octopus, is a treasure which repre-
sents even more points,
The graphics of the game bear the
unmistakable stamp of Richardson's
blend of humour and realism. The
diver's legs paddle, the fish move their
tails, the electric eels emit sparks, and
the shark swings round in a frightening
three-dimensional way. The cursor keys
move the diver much as he would move
in real life under water — clockwise and
anti-clockwise rather than in straight
lines — and if he hits his head on the
rocks, play ceases for a few moments
while he recovers consciousness.
Richardson, whose wife is expecting
their first baby, hopes to be able to pay
off the mortgage on his house from the
proceeds of his games but he still some-
rimes wonders if he did the right thing
in giving up a safe, secure job for the
uncertainties of the software world.
Nevertheless, he has no worries
about the immediate future. "I do not
see why computer games should not
continue to sell well," he says. "After
all, the record business is still flourish-
ing," Nor does he think the future is
bleak for small software companies wiih
only a minimum of capital and equip-
ment.
"Anyone can write a good program,"
he says with typical modesty, "All it
takes is a computer and plenty of pa-
tience."
SINCLAIR USER February 1SH4
99
BETA BASIC
ENHANCED BASIC FOR THE
ZX SPECTRUM 16/48K
26 NEW KEYWORDS — 10 NEW
FUNCTIONS - MANY EXTRA FEATURES
*l " E » aim ir u a m i i i m|i j> | i n n »* » «iun "»»
AUTO <« «jtfi*WI£ Hit tf *» ■*■' *P"
cuati - ua* i *<*i » -dm* *■**> ^— m •"* aiMyMri BUM
ofitTE m> ihkl [ir hp
tlU -DO Ln*itmin nVlWHU WT^nlllT*
»WE 4M**C>*
(CUT - 1 MG**« ™ n"m^
fUE - j»««l .THEN.
OFT - ■*!■ hr U,[wl vrrrr. <kM«i'i » t MEfl
- - Mil t-l— ■»- Kv-wito P« nom* uKp">-» mM»
- GO&Jfl i* 50 ~0 * 1^* nunliv hun ■ hal D* WW **■■'*■*«
- ritoni PH»<ig nl nuff lafKFti 1 ad tv«*ribH £**V* -.MI and
5 T »r •«*•!
■ tfnpww dak Inn BASIC A irK*
mmd vmMni WWi HF "HOC VYJ f» >-»C
- r*ffc»T*M [Hi et w^i prc^TIf** ■i™* 1 1E*OfHl BlBf* Ira ihd
ncmnwH. HaXM GO TO KfWU" UN «r
flDtl - ioa rf« «ffl*HI * fl+n IK *h* ■"" ri mt ttiHCWl. *H*
ICHOLL - ■■ KUL Dul n«TJ*/l *" PQ pnuni
SCUT - ■MU(*1*lU'll~i|!l"'»™~™Ii«t=rtl«ll"*« ,l *l
■jbwi^Tj if :a*i/w* tsof- iNvlfti* wii i> '*»«*> vdr !>*»
U*« ■<*«■ »> *» ■=>«■• n anil » llflft of ■ wv«
TtijhCE Jilj.i. I f^j'i. cH In *nd rlBlMIMAI 4UUkPI M ■ IKWJNrn ■
USMG - UM4 *nr> PflhT '«ttwi t *hptc*1
f uncriorU fyo*«0»
Ccmvamo" between #ac-imil and hexadecimal — convenor* bitwttn ir>teg*fi and
two-eheractt* airings laltowi "xrieijer uny*-"* - ittrTwtimg n f numbers
IKSTBING and STRING* »™jiu*l«Ti!i - amouni ol fct» rrumgry - doubte PEEK -
curteni tune
*ewfir«* *TCrt**.-
SinghMiitrY lifywniH iin gfajjhici mottet *nh avnia* clreck on w^ry - **w«t
now «r'sr messagei - -romp ji ib-in y <*.r.n Spectrum BASIC - program occup»»
iMti S.HK - cur jot can move m ill dirnttmm if a Ime betna odit*Q rijihwng
ci#rwn ana (KHfiiw - BREAK g*?rs vcu out of av»n machine code lock-ups - PIOT
*»rt kdu plo! rt'mi ifVy»vn*r» on (h« kiHi> - PLOT »rvfl DRAW teal. «nd ort»r
rl Ut c*n be »et ui«to KRC. VftG, XOS and ¥0S 1 UK *nd iBIt vmikmi of>
»ff* !«CW cornpr*neflrh»a fn*nu»l,
Otif f ( lOOincUVt'
Pimh Band irra coo»* of bti BASIC.
< BnCrOEW Ctl»OJ*». , B.<3 fCJf t .....,.,
N*th: , ■: - "
•: - •-
BETASOFT
92 Oxford Ro«J r Mo*fttey. BIRMINGHAM B13 9S0
HORNBY
SOFTWARE
SPECTRUM
PRO GOLF SERIES J ,£g
NEW ERA IN COMPUTERISED GOLF
L
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EXACT SIMULATION OF BRITAIN S TOP GOLF COURSES
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(2) DESIGNED FOR ONE OR TWO PLAYERS
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SHAPE OF SHOT
<6) GRAPHICS EXCELLENT
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* TROON E6.95 48K
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21 PINFOLD HILL, LEEDS LS15 OPW
MAKES FUN OUT OF LFAHNlNG
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Willi parenr = fidji r»tn 1inj luls will nn» lu play mm partj o»mBa they
can ' blew out the canites on I o*e, sing along wlh imrMiy rtiynm,
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100
MM I AIR USER Jvnraar,
Joystick and
Interface
for Sinclair spectrum with these
featurei to give you endless hours
of enjoyment,
1- Super positive response fire
button.
2. Firm suction cups for stable
one hand operation.
3. Snug fit hand moulded grip.
4. Additional fire button.
5 Extra Jong 4 ft lead.
The Interface supplied with the
Quick Shot (tm) has a two joysticks
facility . w
The first port simulates 6789 SO
keys. The second port simulates in
(31 1 command. Jt will run any
Software.
1. Using keys 6, 7, 8, 9 and 0.
2. Having red! finable key
function.
3. Using In (1 1 1 i.e. Kempstan.
4. Any Software you write
yourself.
mrm
■.jlll^
1 1 nrrrrnTTiTii
1 1 1 :J * i \i I I
111 mil'' 1111
Light pen
The UGHT PEN enables you to
produce high resolution
drawings on your own TV
screen simply by plugging into
the ear socket of your
Spectrum. The controlling
software supplied with the
light pen has 16 pre-defined
Instructions. You can change
colour (Border, Paper, ink),
draw circles, arcs, boxes, lines
and Insert text onto the screen
at any chosen place, you can
also draw freehand. There Is a
feature to retain the screens
and animate. On the 48 K
Spectrum you can retain 5
screens. You can a J so use the
machine code on Its own in
your own programs, for
selecting out of a menu etc.
The LJGHT PEN Is supplied
with a control Interface, to
adjust the sensitivity /pen
alignment. - ^ m ^^^
Keyboard for
use with a Spectrum
or ZX81
Our cased keyboard has 52
keys* 1 2 of which form a
numeric pad. The 1 2 keys
comprise 1-9 numeric plus full
stop and shift keys, air in red, to
distinguish from the main
keyboard keys which are In
grey, the keys contrast with
the black case to form a very
attracth/e unit. The case has
been designed to take a ZXS 1
or Spectrum computer. 16K.
32K or 64K can also be fitted
to the motherboard inside
the case {a 1 model onlyj.
The case Is also large
enough for other add-ons
like the power supply to
be fitted, giving a very
sman self-contained
unit with which other
add-ons e.g. printer
etc. can still be used.
Our ZX Professional A
key board offers more /
keys and features than /
any other model In its \1
price range making /
It the best value
keyboard f-
available .
cft'ffOIMf*
The so-ca'led speaker In your
Spectrum is really on a "buzzer
With the DK Tronic s SPECTRA
SOUND you can generate fully
amplified sound through the
speaker on your TV set. SPECTRA
SOUND is a very simple but
highly effective add-on This
means that you no longer have a
faint beep but a highly amplified
sound, which can be adjusted
with the TV volume control.
The SPECTRA SOUND fits
compactly and neatly inside the
Spectrum case and is connected
by three small crocodile clips.
9.95
apt
Plww send me . @ t
P\vn se arid on f I 25 for post and fwdtinq
Ptncfoie rUrqur/PO payable to DK TromciioMJ £
of drfait my AccPSi/RarciaycardNo.
i i i m i m i i
Signature
Name . . .
Address
Send to: DK Tronic* Ltd. . Unit 6, Shire Hill Ind. Esl Sailron
Wakten. Essex CB1 1 3AQ TH (0799) 26350 {24 hfs) & lines
Doric Computer Services
Present
/
i
AN AMAZING NEW
ADVENTURE GAME
WITH ANIMATED
GRAPHICS
FEATURING:-
* A completely now cove layout,
monster position and event
sequence generated for every
game.
I A time limit of 5 days' on
every adventure.
► Continuously displayed high
resolution graphics and text
All monsters, articles and
locations depicted to a level of
detail that pushes SFECTRUM
graphics to the limit,
"'The closest yet to a true
animated graphic adventure,..
...excellent value lor money."
POPULAR COMPUTING WEEKLY.
>•
FOR THE
48K SPECTRUM
$F
■v
^
^
**
rp
£V #
Starterpack =
GLOSSARY
Basic — Beginners' All-purpose
Symbolic Instruction Code. A pro-
gramming language resembling
English which is used by beginners
because most popular microcom-
puters have it as standard.
Bug — an error in a program.
EPROM — Erasable Programmable
Read-Only Memory. Semi-
permanent storage, Information is not
erased id he power is turned off in, the
computer. Programs can be erased by
subjecting the memory chips to ultra-
violet light. The memory can then be
re- programmed using an electrical
device called an EPROM blower.
Interface — RS232 and Centronics.
A device which enables other com-
puters or add-ons, such as printers, to
be connected to the computer. It con-
verts non-standard signals from add-
ons to the standard signals of the com-
puter in use.
Kilobyte — (K). A measurement or
memory size. Most machines use 16K
as a minimum but 48K is generally
agreed to be necessary for serious work.
Machine code — an electronic pulse
code used by the computer to perform
functions and communicate with
memory and other devices.
Mnemonics — abbreviated instruc-
tions — for example LD for Load —
used in machine language programm-
ing.
Motherboard — an external printed
circuit board which is used like a
multi-way plug planner. It enables
other printed circuit boards, such as
graphics boards and colour boards, to
be slorted-in.
Port — a Jink to the outside world
which can be used by programs and
the computer,
PCB — printed circuit board. A
board which has on it the electronic
circuits of the computer.
RAM — Random Access Memory, In-
formation and programs can be stored
in this type of memory as electronic
pulses which conform to a set of
numbers — machine language — in
which programs are represented in the
computer. When the power is turned
off the information will be lost.
ROM — Read Only Memory. Infor-
mation stored in this type of memory is
not lost when the power is switched off.
Software — programs which control
the operation of the computer.
Syntax error — a bug caused by in-
correct use of a programming
language.
Our easy-to-follow guide for new owners
The basic route to a
habit-forming hobby
BUYING a Sinclair machine can be
the start of a lifetime's obsession
with home computing. It is easy,
however, to become discouraged if
everything does not go according to
plan from the beginning.
For those with only a little knowledge
of computers and their capabilities, the
best way to approach the machines is to
abandon any ideas for special uses. While
the 4SK Spectrum is big enough for
simple uses in small businesses, the range
of Sinclair computers does not contain
machines for major uses. It is better to
become accustomed to the many facilities
and then decide how you wish to use
them.
Begin by unpacking your machine,
overcoming your surprise at its size and
weight and, following the manual, set up
the system. If you cannot get the K on the
screen, check that everything is plugged
into its correct socket and re-set the
machine by pulling out the power plug
for one second and try tuning-in again. If
still nothing appears, check the power
supply unit by shaking it. If it rattles,
return it. If it is satisfactory, check your
system with that of a friend.
If you have a Spectrum you will have
received an introductory booklet which
explains what the computer can do and
giving detailed instructions on how to set
it up. Also included is a fault-finding
guide.
Once the K appears you are ready to
begin learning about your machine. It
can prevent family arguments if you can
afford a separate television set for your
system. It also makes life easier if you
find somewhere to leave your equipment
set up permanently. You will find that a
few power sockets are needed and a four-
way block connector on a short length of
extension cable will help to tidy trailing
leads.
When using a Spectrum, a television
set has to be more finely-tuned than when
using a ZX-81 because of the added
dimension of colour. If the set is not
tuned properly: the colours will look
hazy instead of sharp and clear. If no
colour can be seen when it is switched on,
the power supply or the television set
may be at fault.
Some users have experienced some
difficulty with some television sets,
which include Hitachi, Grundig and
Toshiba. Sets which many people have
found compatible include the Sony
Trinitron, Fidelity and Ferguson. Re-
cent changes in the VLA should make
more sets compatible.
The manuals are written in great detail
and arc reasonably easy to follow. Some
of the chapters may not seem
immediately relevant but it is worthwhile
reading them as you might miss
something important.
Patience is needed at that stage to learn
the ways in which the computer will
accept information. It is templing to try
10 enter programs before you are ready
but that is likely to lead to errors. For
example, words like AND, THEN and
AT should not be typed- in letter by
letter.
By the time you have reached chapter
1 1 in the ZX-81 manual and chapter 19 in
the Spectrum manual you should bjv L
accumulated sufficient knowledge to be
SINCLAIR USER February 1984
103
r
Starter pack
conunvtd fn>m pitgt 103
able to type-in other people's programs,
such as those in Sinclair User and Sinclair
Program i, without too much difficulty.
It is important when using the
ZX-S1 that it is not jolted. Some of the
connections can easily work loose and
everything which has been entered will
be lost.
The manuals are not to everyone's
liking and if you find them difficult to
fcillow a number of books on the market
can help you. Find the one which suits
you best.
As a way of relaxing you can buy some
of the growing range of commercially-
produced software. That can be Loaded
directly from cassette but make sure that
your machine is big enough to take the
tapes you buy.
For the ZX-81 there are a few tapes for
the unexpanded IK machine but the
majority require the I6K RAM pack.
Similarly on the Spectrum most
companies are taking advantage of the
possibilities provided by the larger 48K
machine rather than providing cassettes
for the 16K.
The tapes can vary in quality and it is
advisable to read [he reviews in Sinclair
User and use your judgment to find the
best.
An alternative method to learn about
both the ZX-81 and the Spectrum is to
plunge in at the deep end and see what the
machines will do r Refer to the manuals
when you have difficulties. You can
ignore the functions and calculations
initially and experiment with PRINT
statements to obtain the feel of the
machines.
You may already have heard about the
problem involved in SAVEing and
LOADing your own cassettes. The
manual gives detailed instructions but
many of the early ZX-81s would not
accept tapes from some recorders. That
problem is said to have been overcome
but there can still be difficulties.
Usually they occur when LOADing
tapes recorded by other people. One
simple method to overcome this is to
wind the tape to the middle of the
program and type LOAD " " followed by
NE WLIKEi then increase the volume of
the recorder slowly with the tape running
until the television screen shows four or
five thick black bands. If you then re-
wind the tape, the program should
LOAD normally,
LOADing and SAVEing on the
Spectrum is much easier and faster than
the ZX-SL One difference is thai when
SAVEing on the Spectrum the LOAD
lead must be disconnected either at the
recorder or the Spectrum.
Finally, a health warning. Apart from
any practical uses, computing wiih
your Sinclair machine can be a very
entertaining hobby and is almost
certainly habit-forming. You may easily
find yourself crouched over your
machine, red-eyed, in the early hours of
the morning thinking that in another five
minutes you will solve the problem. Try
to break that habit by getting into the
fresh air and meeting other Sinclair
users.
By obtaining a Sinclair computer you
find that you have joined a not very
exclusive club with many thousands of
members, many of whom would be only
too happy to advise you if you have
difficulties.
Make sure of your regular copies of
Sinclair User and Sinclair Programs and
you can be guaranteed many happy hours.
DOflflLD
DUCK
ROBERT HENSON of Gun-
thorpe, Peterborough has writ-
ten Donald Duck for 16K
Spectrum. Run the program and it
draws your very own Donald.
LS
1 INK 7 PAPER 0ORUER H L
Z PLuT 14ti,76 \MfM 4,30
4 PLUT 93,78
3 ORHH 1,2S
6 tiRflU 10, 17, -PI •£
7 PLUT lib, US' D*AH ^4,1,-Pt
/Z
PLUT 120, 124
S W?AU 0,6
10 DfiRH 1^,1
11 DRAW 0,-6
12 DRAW 0,6
13 DRflU -4, 16,FI*1.7
1 4 PLOT 1 30 , 1 5 1
15 DRAU ~St,-2fiPltl.£
16 PLOT 16 J.. 120
17 DRftUI -26.-30
10 DRAW 6,4
13 DRAW -4,-2
20 DRAW £5,29
21 PLOT 133^:?
22 IjRRW 16,6, Plx4
23 DRAW i, 10, PW
24 DRAW -23, 4, -P 1^2
29 DRAW Q,26,-PI^12
26 DRAW 10,0, -PI /I, 3
27 DRHU 0,-27, -PI ME
26 (jRflU -10, -b, -PI ^1,5
29 L*RHW 9, 13, -PI ^2
30 PLOT 106,»
31 DRAW -10,e,-PI^4
32 DRAW -1, 19,-PJ.^E
33 DRAW 2b, 4. P 1/2
34 DRAW 0, 27, PI ^13
35 DRAW -1G,S,PI-'1.3
36 DRfltJ B,-27,PI/i3
■A? L>RAW 5,-7,PI^I-
3Q DPRU 1,0
3S fjRRU 11, 12, -PI sz
40 PLOT 104,61
41 LRRH 4,-22
42 L'RRW 24,0, Ply 15
43 t'RAW 0,20
44 CRAW -2,0
45 DRAW -7,-lS
46 1'RRU -,;0,0, -PUi'i
47" DORM -4, 10
48 PLUT 106,71
43 OPRU 46, -3 i PI 'J
50 PLUT 119,64
31 l-flflW 3,-11
52 PRAM t , 1 B
*3Ji ^TOP
54 SAVE. "L'UHrtLO- 1 LI HE
*5 PUN
104
SINC LAIR \ fS F,R Fcbruarv 1984
1Q FOR Z*l TCi 43
2* PLOT 0,2
3ti PLOT Z,U
40 NLXT Z
70 LET fl-INT tfiND*£a>
SB LET B-INT <RND*£l>
ye PRINT RT R,Bj" r *-iv-*"
10B PRINT RT 20,1 £j "WHAT RNLLfc
JF FIRE ?"
Itfl INPUT R
120 PRINT PT 21,6jRj" DEGREES"
130 FOR N»l TO 43
J3g IF (CTflN (Pi^100*PI>>*W>40 TH
EN OOTO lb0
140 PLOT NjCTRN (R^ie0*PI.D*N
t^JO NEXT N
160 PRUSE ESQ
170 LLS
100 OOTO 10
Coo.
angling
ENTER the angle in degrees,
from nought to 90, and cast your
rod into the lake. If you are
correct you will catch the fish. Angling
was written for IK ZX-81 by J Crick of
Huntingdon, Cambs.
ALPHABET SOUP for the IK
ZX-81 was written hy Charles
Bissel, aged eight, of Cocker-
mouth, Cumbria. Guess the letter cho-
sen by the computer. You have six
chances and a clue as to whether the
chosen letter is higher or lower in the
alphabet.
THfciN UJTU 110
THEN PRIN7 "LrtrER"
fl*>L3S THEN PRINT "EflRLIE
m IF C-fc THEN LQTU IfcO
100 NEXT L
110 PRINT H CQRftECT-&0 YUU WANT
TO GTQP OR HRVE RNUTHER GO
l£Q INPUT b%
130 IF B*= HJ STuP" THEN STOP
150 IF &*~ u RNUTHER tiQ" THEN RUN
lb"0 PRINT "WRONU-DO YOU WANT TU
STOP OR HRVE RNUTHER CCT
170 UOTO 1£Q
SINCLAIR USER February 1984
Wi
= Starterpack
SPLAT
GARDNER, aged 13, of
■March, Cambs. wrote Splat
for the I K ZX-81 . The object is
10 hit the monster (inverse") 10 times
with your pistol (graphic "e"). If you do
not manage to kill the monster in the
time given, the score will be displayed.
Z LET S»0
5 LET Oil
10 LET fl-ll
11 FOR R*l TO 100
13 LET D-0
15 IF fl-£l QR R-0 THEN LET R™=1
30 LET B=INT < RNL>*£ M-l
40 IF &*Z THEN LET R-Ff-1
50 IF B-l THEN LET R-R+l
55 PRINT AT fi* 16; "< i")"
60 PRINT RT C0J "<9e) M
70 LET C-CK INKEY*-"7" >+f. iNKEY
*-"S" >
80 TF INKEY*="P H THEN COSUB 45
90 IF 3-10 THEN GOTO 1000
100 FOR Z-l TO 30
105 NEXT 2
110 CLS
1£0 NEXT R
136 GOTO 10S0
490-FUR F-0 TO l€
500 PRINT RT CjDj " . "
520 LET D=D+1
530 NEXT F
540 IF C*R THEN PRINT RT C,C»J M <
#Hfc£#ix2*i*)"
543 IF C^R THEN LET S«S+1
545 FOR Q*l TO 56
546 NEXT Q
550 CLS
560 RETURN
000 PRINT "MONSTER SPLAT TED"
010 FUR X*l TO 50
01 i NEXT X
320 CLS
030 PRINT "YOU SCORED " ; S
040 STOP
GRID PLOTTER
GRID PLOTTER will print-out
a 32x32 squared grid which is
a useful aid when designing a
screen layout. Grid Plotter for the
16K Spectrum was written by D Scott
of Carlisle, Cumbria.
10
REM LAYOUT
PL0T1 ER
20
PLOT 255. 175
30
DRAW 0,-175
i
40
PLOT 0, 175
50
DKfttJ 255/0
60
LET x«32
70
LET a -22
80
FOR *~0 TO
1?5
STEP
S
*0
PLOT 0,y
100
DRAW 255/0
110
NEXT y
120
FOR x=0 TO
255
STEP
8
136
PLOT >o6
140
DRAW 0, 175
150
NEXT X
_ . .
—
■
— —
—
—
-
_ —
1
—
~~~W ~i
j
-
1
\
—
i — —
—
/
i \
-
m
—
I w
—
M
i
! 6
SINCLAIR USER fVmmy IW4
■
Starter pack
Trapping the errors will
ensure first-time running
THE FIRST error code encoun-
tered by most Sinclair users is
the flashing t( S" on the ZX-81
or "?" on the Spectrumj which indi-
cates a syntax error in a sentence. Ex-
perience and the manual soon show thai
it is caused usually by typing- in a
keyword letter by letter, or by bad
punctuation, for example omitting a
semi-colon or an inverted comma.
The most frequently-occurring error
code is "2" — variable not Found. A
variable is a letter which has been given
a numeric value. When you enter
4l LET a = 2" you are defining a vari-
able. Error code 2 results when the
computer reaches a variable in the pro
gram to which you have so far given no
value.
Check the line which the computer
specifies. If it is your program, give a
value to the variable or remove it. If you
are copying the program, look back in
the listing to see which line you have
missed.
Although the majority of error codes
are explained adequately in the man-
uals, (he report "B-Integer out of
range" can be confusing. An integer is a
whole number — 1 is an integer, 1.5
and Ij are not. That code occurs most
frequently when you try to print some-
thing beyond the limits of the screen.
PRINT AT 0,31; "a" is acceptable
and will print a letter "a" at the top
right of the screen. PRINT AT 0,32;
"a" would not be possible. The integer
32 would be out of range., resulting in
error code <L R'\ That would also hap-
pen if the computer were instructed to
PRINT AT 0,31 ; 4S ab'\ It would still be
trying to print a character beyond the
limits of (he screen.
Thai error is more difficult to detect
if variables have been used as co-ordin-
ates and your character, or series of
characters j is being printed in varying
positions. If the instruction PRINT AT
Ofjq'V produces report code B, make
sure that the value of x never increases
beyond 31.
On the Spectrum "B-integer out of
range" is also often found when you are
POKEing-in user defined graphics,
The biggest number which can be
POKEd-in this case is 255 or BIN
1111 11 1 L In that case the error code
will occur in the line containing the
POKE statement. In most cases,
though, the error will have occurred in
one of the DATA lines in the program.
A very frequent error code produced
on the Spectrum is "E-Out Of Data".
Thai will occur in a line containing a
READ statement. The error code,
though, will have occurred in one of the
program DATA lines 3 which may be
nowhere near the READ line, A READ
command sends the computer to a
DATA line to collect the next piece of
DATA contained there. That is often
dane using a FOR, NEXT loop, es-
pecially when graphics are being set up,
FOR n= I TO S: READ n will send
the computer to the DATA lines eight
words such as LN or EXP as keywords.
On the ZX-81 especially it is easy to
forget that pressing "*" will produce
the word PI.
Make sure Lhat when the "is not
equal" sign, "< >" appears in a listing
you always enter it as one character and
not as "is less than", '*<" followed by
"is greater than", ">".
Technical problems can also cause
errors in programs. Any alteration to
the power supply can cause a program
to CRASH. In that case the screen
display may change dramatically and
using the keyboard will have no effect.
The only solution is to unplug your
computer and begin again, making sure
that your power supply and RAM pack
'The error need not be on the line which
produces the report; that is simply the line
where the computer meets the problem'
limes, for eight separate pieces of infor-
mation. If there are only seven pieces of
DATA there ii will return to the READ
line and produce the code OUT OF
DATA, When ihere are several DATA
lines they will all have to be checked,
because the piece of DATA you have
omitted was not necessarily the last.
In some cases the computer will fol-
low the program correctly, without pro-
ducing an error code, but from the
programmer's point of view the pro-
gram contains an error. In that case
BREAK into the program at the mo-
ment it goes wrong. That will produce
report code 9 and the line on which you
have STOPped the program. That
method makes it easy to locate the area
of the program which contains the er-
ror.
Programs which you copy from mag-
azines, books or from friends can be
difficult to error-trap because they con-
tain programming techniques which
you have not yet learned, or simply
because it is often difficult to follow
another programmer's logic.
The flashing "S" or "?" indicating a
syntax error may appear frequently. In
that case check carefully what you have
copied. You may not have recognised
are both connected firmly. That error is
caused by the computer and not by ihe
program.
Sometimes a program listing in a
book or magazine will contain what
seems to be a very obvious error. If it
contains key words or symbols which
are not on your computer, check lhat il
is intended for your machine. Programs
for the Spectrum, the ZX-81 and the
ZX-80 are not usually directly inter-
changeable, U a program contains the
command GOTO or GOSUB — a non-
existent line number — the computer
will simply go to the next numbered
line after that one. That is a sign that a
program has been developed and im-
proved and is rarely an error.
When you have errors in a program,
first check the report codes listed in
Appendix B of the manual. It may then
be necessary to read the appropriate
section of the manual. Remember that
the error is not necessarily on the line
which produces the report codej that is
simply the line where the computer
meets the problem for the first lime.
Always check carefully every line
connected with the line containing the
error code and the mistake should be
easy to locate.
SINCLAIR USER February 1984
107
spfcm Ntwm* SALE
2X8t SOFTWARE AT
HALF NORMAL PRICES!
If you find Spectrum owners get the best of software supplies these days — our great New Year offer wifl
change all that!
Only for ZX81 Owners — our wide selection includes some of the best programs ever produced for the
ZX81 — and we're bringing you fantastic savings as well.
Just look at our New Year list — then work out how much you can save, and send the coupon today for
your software choice — because at these prices — our stocks won't last for long!
Normal Sale
Price Price
ZX-81 Games
Software
Super
Programs Nos.
1 to 8 1K 4,95
Fantasy Games 1 6K 4.75
Space Raiders 16K 4.75
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Micro-Prolog
Spectrum language
joins the family
John Gilbert assesses a new package
THE MICRO-PROLOG Lan-
guage package from Sinclair Re-
search has arrived at the
appropriate time to give a new direction
to the software market.
The term Micro-Prolog is short for
microcomputer programming in logic
and the language is one of a new genera-
tion which could be termed, under cer-
tain circumstances, artificially intelli-
gent. That means that the computer
will appear to give intelligent answers
to questions which it is asked.
From that description of intelligence
you should be able to see that Micro-
Prolog is nothing like Basic, In Basic
you would write a series of commands
which you would then expect the com-
puter to execute in a sequence. Micro-
Prolog, however, expects a series of
rules, rather like those built into a
database. The rules can relate to each
other or be entirely separate.
The language will provide answers to
any questions you might pose to the
computer which relate to the rules you
have entered into the language database-
Even though it is capable of artificial
intelligence, the language will not be
able to answer your questions if it has
no rule to deal with them. Neither can it
make assumptions or draw conclusions
without those rules.
To aid the construction of your pro-
grams there are several utilities in the
package. One is called Simple and it
will convert the base language into a
language which a beginner can use. It
docs so by adding command words to
the database which will make the task of
programming easier for the user.
Prolog programs are loaded in a dif-
ferent way from those written in Basic
on the Spectrum, The computer will
load software in blocks and the block
numbers will be displayed for each,
along with the message 'BLOCK OK'
or a read error which will break the
loading process,
Once Simple has been entered you
will be ready to write some rules. You
could, for instance, build some rules
about a family and the relationships in
it.
The family could include Clive,
Mary, Robert and Rebecca. If the com-
puter is to answer questions about those
people it must first have a set or rules to
which it can refer. They would include
Robert is the brother of Mary, Clive
and Rebecca; and Mary is the sister of
Clive, Robert and Rebecca, Those rules
would be entered for each of the family
members.
The rules have to be converted to a
form of understanding of the language-
Robert is the brother of Clive would be
translated into add (Robert brother-of
Clive). The middle name is the relation-
ship between Robert and Clive and
must consist of one word, hence the
hyphen.
It is also possible to qualify a data
name such as that of a member of a
family with several tags which would
identify it further when the database is
interrogated. To do so we can use a
statement which consists of one data
name and one relation name. You may
want the language to know that Robert
is male or that Rebecca is female. To do
that you would type add (Robert male)
and add (Rebecca female).
To query the database you can use
several commands, including *is" and
'which'. The 'is 1 command is used to
test if a statement is true or false. We
could ask the question *Is Mary the
sister of Rebecca?" The computer could
then give a YES or NO answer. It will
give a NO answer in two cases — if the
statement is false or if the statement
rule does not exist in the database.
The other query command is 'which'
and that is more flexible. It will allow
you to find the relationship between one
item in the database and another. With
the 'which' command you need to know
only one of the items. For instance, if
you want to know who is Rebecca's
sister you would use the form which
(x:x sister-of Rebecca). The x specifies
the unknown quantity, as in algebra,
and in this case it refers to a sister
Rebecca might have.
When that command is entered you
should have the name of Rebecca's sis-
ter, followed by the statement *no more
answers'. That means that, using the
rules it has obtained from you, the
computer has found the corresponding
relations in the 'sister-of category.
Data structures such as those can be
built with any kind of relationships. To
fit Micro- Prolog into the definition of a
language you have to stretch that defi-
nition slightly to include databases and
programs which store lists of data which
can be accessed depending on the user's
needs. The difference is that Micro-
Prolog is more adaptable to the needs of
the user than a normal database written
in Basic or machine code.
Although the language seems to be
specialised it has several uses, two of
which are the creation of databases
which can be used by almost anybody
and also the creation of educational
teaching tools.
In the utilities line the Prolog lan-
guage has been used to build a model of
the London Underground system. The
various stations in the network were fed
into the computer and the best, and
quickest, possible routes between sta-
tions were found.
Micro-Prolog can also be useful in
the classroom, The database can be
[i rug rammed with information about a
subject and the student can interrogate
the database and not have to think about
what is happening in the computer.
The final test of software is whether
it improves or advances the use of a
computer and this package certainly
does so. The only criticism is its price,
£24.95, which will deter some people
buying what is an example of good
software.
Despite the price, Micro-Prolog will
prove that the Spectrum can be used for
serious purposes and that the computer
has a good future in schools and other
institutions.
Sinclair Research, Stanhope Road, Carnber-
lay, Surrey GU15 3 PS.
SINCLAIR USER ftfewry 1984
109
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DRAWMASTER is the ultimate DRAW AND PAINT utility for
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DLAIM
With detailed instructions £6,95
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YOUR MICRO COULD TEACH YOU
KM
T»7
...OR THE GERMANS...0R THE SPANISH
A home computer is an ex pensive toy; and, if playing
games is all you do with it, a toy is all it is.
Now, using the New Personal Computer
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PCSS language courses comprise 12 lessons on
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Initially the software package enables you to see
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Anyone can learn this way - no previous knowledge
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Each PCSS language pack - French, German or
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FRENCH □ GERMAN □ SPANISH Q
Noma:
Machine Typo .
Memory Size-
i.i.
Forth =:
In the penultimate article of his series., John Gilbert explains two
simple routines to make Forth easier to use
New words make for a
friendlier language
MUCH has been said about the
instruct ions which can be used
in rhe Forth language but few
comments have been made about the
ways in which Forth can be used to give
more understanding of microcomputers
and in the world at large.
There are critics who see no use for
the language and ask for mote machine
code but, with its, entrance as the second
language in GCE computer science
courses, it is assuming an importance
for many students and could become as
important as Basic in the near future.
With the greater availability of i he-
language in institutions such as hospi-
tals, it has more of a status than the
small cult following it had when it was
introduced.
Forth can be used in hospnjls for a
variety of tasks which can be cat ego r-
tnto two essential groups. Its input/
output facilities make it ml ideal lan-
guage for the control of sensitive de-
vices, such as life support systems, 01
even in controlling the temperature of
the hospital environment. It is feasible
that programmers operating such a sys-
tem could be doctors or nurses with
some training in computers, as Forth is
not so difficult to learn as, say, machine
code,
A secondary use for Forth in hospi-
tals is keeping track of patient records.
They could be relayed by the user
through a series of terminals to the
central compute r T which could be a
micro of the same type as the terminals
Each terminal would share the central
computer which, using Forth, could
cope with the entry of huge amounts of
data in a short time.
The central computer in this case
"It is feasible that
programmers could
be doctors or nurses"
seemingly would handle information
from different terminals at the same
time. That type of usage would call for
multi-tasking procedures in the San-
guage operating system, in which sev-
eral jobs can be done at once. As Forth
uses a dictionary in which new words,
or commands, can he defined by the
user, it would be possible to produce
multi-tasking facilities which would
make the job of data entry quicker and
more efficient. Luckily, such proce-
dures are incorporated into David Hus-
band's ZX-81 Forth ROM, which was
discussed briefly in the pre*, urns article.
Forth can also be used u\ factories to
control production lines. As multi-t.i-1
ing is available with the language, it
would be possible to use one microcom-
puter unit to control several unrelated
tasks all happening at the same Time
To run systems such as those men-
tioned some routines have to he devel-
oped which will make the language
much more friendly when the user oper-
ates it.
It would, for instance, be do use to
someone knowing tittle about comput-
ers if the machine was expecting infor-
mation hut did not tell the usci uhat to
expect. Experts with the language may
know how information is introduced
into the system but a doctor, foi
example, might not,
So far we have dealt onh with enter-
ing numbers on to the Forth stack. We
have not attacked the entry of strings
because it is slightly more di 111 cult than
typing- in a figure which the computer
SINCLAIR USER hbrwrv 1984
ill
= Forth
" ,"j^, HI
will then put on to the top of the stack.
It is possible, however, to implement a
simple utility which could be used for
entering data into a system such as the
one used to store patient records in a
hospital.
To produce thai on-screen user util-
ity program we must first enter two
Forth words into the dictionary. I shall
use David Husband's ZX-81 Forrh m
this example although, as it provides
fairly standard Fig-Forth, people with
Abersofi and Artie Forth should be able
to do the same on their computers. It is
slightly easier, however, to illustrate the
point using the onboard ROM of the
ZX-8I Forth package.
Figure one provides a simple Basic-
type INPUT routine which will put a
question mark on to the screen and
Following the *$@' symbol is another
carriage return and the end of word
marker.
: DISr CR CO W CR
Figure 2.
That is satisfactory lor entering
words but you will also need to get the
string you want off the character stack
: INPUT CR
Figure 1.
? " S@ CR
expect you to enter a one-word re-
sponse. Typing ENTER or BREAK
alter the data will put the string on to
the character stack.
That stack is like the one we used for
entering numbers and will accept one
character at a time. Each character is
convened to its ASCII code, which
agam is a number. The character stack
behaves in a similar way to the one we
and on to the screen. This can be done
with the word defined in figure two.
The DISPlay word will output the
text an top of the character stack and
have been using previously, except that lheri mu ™ the system to the user. A
it is for the exclusive use of symbols carriage return prepares the computer
such as a, b, c.
INPUT is the name 1 have chosen for
the new dictionary word which will act
as a bridge between the user and the
character stack. The first thing it will
do is to generate a carriage return, or
new line, using CR. The question
mark, which acts as a prompt for the
user, can then be displayed on the
screen using the print command, '.',
r<il lowed by the explanation string an-
Bouncing the program which is in the
usual quotation marks.
The next pari of the new word is S@,
which may look strange to you. If,
however, you take the two symbols
apart and analyse them vou can see
what this operator does Look in your
user manual and you will find thai
wherever the *@ T symbol is used as a
pre-fix or suffix the Forth word to
which it is attached will do something
with machine addresses.
The 'S 1 symbol can be taken as mean-
ing string, so *S@' will provide a link
between a string of characters on the
stack and the address of those charac-
ters. That gives access to the string
when you want to call it back off the
stack and use ii on the screen.
for the output of text on a new line,
although that is unnecessary, as in most
cases an automatic return will be made.
Again the next command can be deci-
phered by taking it to pieces. The CO
goes back to the days of mainframe
computers with their operator consoles.
It means the device on which the text to
'The routines can be
used for all types of
data entry"
be output is printed. In this case the
screen oJ a television set is used, The V
means print and W stands for 'word'
With a little thought most Forth words
can be deciphered in that way.
The two words mentioned can be
EXAMPLE a s
USES UTILITY PROGRAM
INPUT
CLS
DISP [
Figure 3.
used in their own right to make input
and output easier for the user but just to
show how they can be incorporated into
other programs, figure three provides
an EXAMPLE,
The screen is cleared, using CLS,
and a prompt is given to the user. On
the next line of the definition is the
INPUT word* which will produce the
question mark, to which the operator
must respond. Once an entry has been
made, remembering that it must be one
word in this instance, the screen is
cleared again and the string is quickly
taken oJT the character stack ready for
display on the screen. Type all three
definitions into the computer, produce
a permanent version on tape, and you
wilt have a routine which mimics the
Basic INPUT and PRINT routines.
To get the feel of what is happening
inside the computer we must see whai is
happening on the parameter or number
stack which we have been using umil
this article and the character stack to
which you have just been introdui.v.i
In ZX-81 Forth the string is stored
on the character stack and a reference,
or index, to its whereabouts is put on to
the parameter stack. As more strings are
put on to that stack the parameter stack
also grows with the index addresses of
each character string.
Deliberately I have introduced one of
the more complex operations of the
character stack first because everything
from then is plain sailing. As well as
taking strings off the stack wc can also
take off individual characters.
[f we were intending to take an ele-
ment off the parameter stack we would
use the command DROP followed by
the V symbol if we wanted to print it. A
similar command is used to take a fig-
ure, such as 'A 1 , off the character stack,
but this time we put a 'C before the
DROP. In that way you can enter a
string but take just one of its characters
off the stack at a lime.
The number and character routines
can be used for all types of data entry to
the Forth system. Number entry is
slightly easier but with some simple
additions to the Forth dictionary we can
make ii behave like Basic, at least to the
unsuspecting novice user.
With an introduction to input and
output I have dealt with almost all ihe
important concepts used in the Forth
language. Next month, in the last of the
series, 1 shall introduce some of the
more arcane aspects of Forth and ex-
plain why it is so ideal as an input/
output language. I will idsit be delving
deeper into the multi-tasking routines
available with ZX-81 Forth and give
some ideas as to how this popular lan-
guage could develop in the microcum-
purer industry.
n:
-SINU.AJK l SKK f rbrmny tUHt
Dl LITHIUM LIFT
The year is 2934. Di-Lithium crystals are
humanity's most prized possession because they
are the energy source of every space cruiser. The
Sfrddab, humanity's enemies, have an enormous
stock ot crystals in vacuum vaults, buried beneath
Weir military HQ. The crystals are held in
structured arrays, guarded by laser-armed Oroids,
pending their transfer to an invasion fleet
v ou have been smuggled into the vaults with a
limited oxygen suppfy. Your orders are to LIFT the
crystals before the Droids cut you down. . .
7 screens, 3 lives, high score table, arcade quality,
last machine code action, choose your own keys,
Kenpston Joystick compatible. For the t6K or
4BK ZX Spectrum, |t|J
KNIGHT DRIVER
I'm late, I'm late, I have got to get there. Just put
my foot down and hope. What a bend. I'll never
make it Up the kerb - thal's slowed me down.
I'm off the road completely now. Nice scenery
around here. Pretty flowers and a lake. What am I
doing? I must get back on the road On, this is
hard. I'll never do it.
Steer your car round a tortuous circuit of roads.
braking and accelerating as you go. Avoid the
kerb, islands and parlked cars, i earner and
professional levels. Kempslon joystick compatible.
4flK ZX Spectrum only, «r (IE
The magnificent Fantasia Diamond, heirtoom of
your household has been stolen and taken to an
imposing fortress. You called on the services of
Bens the masterspy, but he has been caught and
trnprtsoned by the Guardian, who patrols the
rooms and corridors of the Fortress, looking for
intruders.
Now you must go and retrieve the Diamond and
rescue Bans On the way you will meet many
characters, some evil and some friendly You will
have to learn to elicit the help of the fnendly ones
in order to complete your task, but remember they
have their own lives to lead so they may not
always do as you ask
A most enjoyable and challenging graphic
adventure tor the 46 K ZX Spectrum jPTHE
\w
Are you looking for a publisher for your programs? If so,
why not drop us a line or better still send in a sample of
your work, lor fast evaluation and prompt reply.
Mail order to:
HEWSON CONSULTANTS
60A ST MARY'S STREET
WALUNGFORD
OXGNOX100EL
They will make your computer
go crazy with rear. *
"One of the best examples of user-defined graphics that I have
ever seen, along with excellent sound effects!'
. . . Home Computing Weekly
'One of our best games yet"
. . . Terry Grant, Rabbit software director
"An obscene celebration of slaughter.
. . . Home Computing Weekly
"My Terry wouldn 't do a thing like that.
...Terry's mum
Now appearing at your local computer games shop,Boots,
WH Smith and Rumbelows.
fraUiatd o*t Spechum, V9C-20 & GBM-64.
IpTii
JOSPACfWARS 1
'/ 1 urll,.:1fiK„.48K ..
Spaclrum ^ 1
^
ifcj
I"
■
3
""+ Se odab have Broken thr-mjgh the
Earth's befeisei and are attacking the
atin. Ydu iri patrolling Itie city streets
- rhs »!|«1 Kn*l Tmk wilh i» swrfat* to
J r rrMjilrj,
Trundling (long vuu obtarvt 'h* '*"
lile bi.ps of the Seiddab as they appeal on
, (Qu? scanner. They break formation and
matt*' across the city. Sudflanly you
* c*ifh ughl of in *h»n Craft iweopiftg
(jvc- the buildings id your right. He files
i piatmi torpedo at your tank. You
attempt to dodge but the missile finds its
mark, shaking your tank and leaving a
| hoi* .n the irmou'
You unleash * rmMiiT *mt fluid* n
I «oji jt»l y !Q un< tshjet. The S*iddao
r*rj|>>dei and crashes from sight. You
hundi over Khe controls once more,
because this » only the beginning . . .
THE MOST IMAGINATIVE
GRAPHICS PROGRAMMING
SOFTWARE FOR YOUR SPECTRUM.
116
SINCLAIR USER February 1984
There's now one piece of software that's a must for The program comes complete with a cassette
every 48K SPECTRUM owner. demonstration of what you could produce with
It's called "PAINTBOX': "PAINTBOX" including a 28 page booklet describing
If you wish to exploit the full graphics capability of in easy-to-understand language how to use it for best
your machine, you can do so . . . simply and easily
with "PAINTBOX".
"PAINTBOX" is produced by Print V Plotter
Products — the company that has pioneered {and
led) the field of graphics aids for ZX Computers.
With our name and reputation you are assured of
quality and immense graphics capability!
Take a look at the actual screen prints opposite.
They are the sort of thing you could produce on your
SPECTRUM.
With a little practice — and "PAINTBOX" — you
could be planning, producing, and utilizing these sort
of graphics in your programs — producing software
that will come alive with originality!
Just look at some of the facilities available from
"PAINTBOX":
UDG EDITOR: SO SIMPLE
Giving you the facility to define (and re-define) up AT ~J
to 84 graphics characters which can be held in f^r~\[ TT Y\
memory, stored in your BASIC programs for instant LAJU LU
recall from its own built-in machine code! ISP IT^
UDG DRAWING BOARD:
A fully integrated UDG Planner for up to 4 Banks
of user-defined characters. Planning facilities include
MIRROR IMAGE, ROTATE, INVERSE, and FILE.
SKETCHPAD:
An experimentation "window" that allows you to
try-out your UDG ideas during development of the
84 graphic character set.
PRECISION PLOTTER:
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Combining the best of both worlds! PRECISION
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"PAINTBOX" is such a comprehensive graphics
toolkit that it is impossible to describe it all in one
advertisement!
results and many tips for storing and using your
graphics in BASIC programs.
Of course, "PAINTBOX" is ideally suited for use
with Print n' Plotter's other great graphics aids.
The dedicated programmer will want to use it in
conjunction with our ZX SPECTRUM JOTTER PAD
— THE ORIGINAL {AND BEST) GRAPHICS
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01-6607231
24 HOUR CREDIT CARD ORDERING
Posi to; Pent SU Print n Plotter Products Ltd,, 19 Borough
High St reel, London SEI 9SE, Please send me:
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. . . . SPECTRUM JOTTER PADS @ £7.50 ( £1.50 p + p total l<9 )
.... SPECTRUM KEYBOARD OVERLAYS @ £2.60 ! 35p p+p
total £2,95)
5 ROLLS ZX PRINTER FAI'EK@ £11 55 <95p p+p tola]
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"W
MNVl.AlK USER ftbntary 1984
117
The abc of simple
keyboard drills
Theodora Wood looks at reading programs
THE USE of computers in teach-
ing literacy skills, at a very early
age and later as the child be-
comes more adept at recognising and
communicating the written word, inevi-
tably entails the gaining of skills with
the computer. The use of the keyboard
to answer on-screen questions and com-
mands reinforces that aspect of edu-
cational computing.
That is nowhere more true than of
the many alphabet programs on the
market. Learning the alphabet requires
not only the ability to recognise and
differentiate between shapes but also to
match shapes to their appropriate
sounds. Without an adult to speak the
sounds, the alphabet games become
merely a matter of keyboard training.
Letters and Numbers, Junjtms Soft-
ware, Spectrum 48K, £4.95, is an
example, where the child has to press
the matching key to the letters which
appear on the screen. If correct, the
picture appears with sound and anima-
tions unlike Alphabet — Widgit, Spec-
trum 48K.., £5.95, The use of voice
synthesisers should alleviate this prob-
lem somewhat,
abc . . . Lift Off — Longmans,
Spectrum 16K, £7.95, is slightly differ-
ent in that the child has to match a
picture to a word and its initial letter in
a game of snap; the child has only to
press S to indicate a match. When six
correct answers have been given, a rock-
et takes off. The action takes place
quickly and is best-suited to be used as a
consolidation routine, after a child has a
knowledge of the shapes and sounds of
the alphabet.
Alphabet Games — Blackboard
Software, marketed by Sinclair, Spec-
trum 48K, £7.95, immediately seems
better value in that there are three
games in the one program. There is also
the possibility of customising the pro-
gram or incorporating routines from it
into programs a parent or teacher may
be writing, and the cassette gives hints
on that.
Blackboard has allowed for that in all
its programs, producing a degree of
flexibility not found in other software.
Once LOADed, the program offers the
choice of three games, Random Rats,
Invaders or Alphagaps. After the
child's name is entered, there is then the
choice between upper- or lower-case
letters. The speed is fast, and can obvi-
ously be changed, but that adds to the
arcade-style fervour of both Random
Rats and Invaders, Both games are una-
shamedly keyboard trainer^ matching
lower- and upper-case letters. If played
with a child who shouted the sounds
while a parent types them it can prove
to be a good practice session on This
level.
In Random Rats, rats appear on the
screen at intervals and ■ white block,
the gun, moves across the screen. The
child has to press the letter which ap-
pears on the gun to zap a few rats. In
Invaders the child has to press the letter
which appears on the alien spaceship to
prevent it landing by blowing it up. At
the end of both games the player re-
ceives a certificate if a ZX printer is
attached.
The third program in Alphabet
Games features training in another kind
of skill that is the order or the alphabet,
"The programs have
little connection
with real life*'
important in the use of indices for
filling and retrieval purposes. Alpha-
gaps shows the alphabet on the screen
with some missing letters. The child
has to fill the gaps with the correct
letter from left to right.
Sinclair has also released five pro-
grams recently which foster the whole
word approach to reading as well as the
use of the alphabet. Learn to Read 1-5
— Sinclair, Spectrum 48 K, £y.95 each,
provide a range of activities with a
structural approach to teaching the
reading process.
All the programs feature the animals
from the reading scheme^ Meg the hen,
Sam the fox, Jip the cat, and so on, and
are very simplistic in their textual con-
tent. The year 1950 was, after all, pre-
televjsion for most children and the lack
of sophistication is evident in 1984.
They eschew such criticisms as sexist,
which are directed at many of their
contemporaries such as Janet and John,
but overall have little connection with
real life.
Learn to Read 1-3 runs on a rough-
ly similar format. Once LOADed, the
menu appears, a box moves over the
names of the activities and the child has
to pfess a key when the box surrounds
the chosen task. Names introduces new
words on all three programs, ranging
from the names of the animals to the
last word in a sentence containing the
words learned in previous prog ram v
Those are shown at the beginning of the
program to be read by an adult and then
tested. In Learn to Read 1, one animal
is left on the screen with a list of all the
names- the child has only to press a kev
when the moving box is over the correct
word. By the time Learn to Read 3 is
attained the same task includes reading
a sentence and matching two words
with objects which appear at the top of
the screen. If correct, the word is writ
ten in big lower-case letters,
Kim is the next program on the
menu increasing in difficulty over the
range. It is a simple memory game
where pictures with words or sentences
appear on rhe screen and then one
disappears. The child has to spell the
word on the keyboard; if correct, the
picture and the word appear again.
That is repeated until ah the words have
been tested.
Spell, the next game, is repeated on
all three programs. In one all the ani-
mals appear on the screen and then each
US
SINCLAIR USER February 1984
Education =
is bbelkd in turn; the child has to spell
the word on the keyboard. After five
attempts the computer gives The correct
letter. In Learn to Read 2 bars of
labelled colour appear at the top of the
screen and then a sentence appears on
the lower half, for example Meg the — ,
and the child again has to spell the
word; if corrects the animal is coloured
by a dripping pot of paint and the
sentence is completed, Meg the hen is
yellow, A score bar builds at the side of
the screen with each colour, Learn to
Read 3 provides the child with a multi-
ple choice of similarly-spelt words to fill
the gaps in a sentence, A similar score
bar operates as in the previous program.
The final choice on all three pro-
grams is a version of the perennial
educational game pairs, called Card.
Over the span of the three programs the
number of cards increases from eight to
12, from matching pictures, through
matching pictures and words to match-
ing pictures with their initial sounds —
the first introduction to phonics in the
whole scheme. The child has to EN-
TER the numbers of the cards to turn
them over.
Learn to Read 4 is devoted to teach-
ing alphabetical order and is much more
accessible than the previous activity dis-
cussed, Alphagaps, found on the Black-
board Alphabet Games. There are three
choices - NEXT, MIDDLE and
FIND. NEXT shows the complete al-
phabet, upper- and lower-case, printed
to a catchy tune- Three letters appear
on the screen in alphabetical order and
the child has a picture clue to help
ascertain the fourth letter, as well as the
alphabet at the Top of the screen.
In MIDDLE the child is presented
with three boxes, the outer two of
which contain pictures and letters and
the child has to guess the middle letter.
After five incorrect attempts at either of
the activities, the letter is given. FIND
can be slow or fast — pictures in alpha-
betical order move across the screen;
when there is a gap the child has to
press the appropriate letter on the key-
board. At the end there is a house with
the entries missed in the windows.
The fifth tape is a series of examples
and exercises to aid The learning of all
those positional words, such as on, top,
bottom. These words, although com-
mon in written text, often prove a stum-
bling block for early readers.
As all the programs are based on the
same animal characters, it is more diffi-
cult to imagine using the useful routines
found in such a program as Learn and
Read 4 out of context, and Fisher-
Mar riot has allowed no provision, un-
like blackboard, for doing so; CAPS
SHIFT BREAK causes I he program to
crash. Also because the scheme relies
almost completely on three-letter
words, there can sometimes be nonsense
sentences for the child to complete,
For older children. Star Reader —
Scisoft, Spectrum 48K, £6.95, is aimed
si the six-to-1 1 age group and provides
training in the meaning of words and
their position in the contest ofa written
piece of text. There are three levels of
reading difficulty and two choices of
activity. Al each level a passage of Text
"Exposure time can
be regulated to suit
the child concerned"
is shown on-screen with some words
missing; The child has to ENTER the
words from a choice given at the bottom
of the screen. At level one the second
choice of activity is to sort jumbled
sentences, while the alternative choices
for levels two and three concentrate on
dictionary skills and filing activities,
both useful for information searches.
Castle Spellerous — Blackboard,
Spectrum 48K, £7,95, flashes The word
on the screen before the child has to
spell it. The object is to release the
princess from the wicked magician's
palace. It is well-realised graphically-
and interesting, with sudden surprise
attacks fended-off by pressing the ap-
propriate letter on the keyboard. There
is a choice of 10 types of words, for
example *ea ! words; the word fists can
be changed and the exposure lime to the
word can be regulated to suit the child
concerned.
Scisoft has produced a similar pack-
age in Wizard Box — Spectrum 48 K,
£6,95, — the words do not flash on the
screen but can be recorded on tape. The
problem of synchronisation could be-
come acute for a child not accustomed
to tape recorders. Hangman programs,
either typed from books or akin to the
version found in Punctuation Pete,
are probably just as effective and inter-
esting as a spelling tester.
Blackboard has also released four pro-
grams to help with punctuation - Cap*
ttal Letters, Early Punctuation,
Speech Marks and The Apostrophe
Spectrum 4SK, £7,95, The titles give
an obvious hint to the contents, All the-
programs give examples of the use of
punctuation and then test the child with
a piece of text on which to practise, A
little stick man moves over the text and
the child has to stop him at the correct
place to insert the punctuation masks.
If a ZX printer is attached, a certifi-
cate is printed with the number of
correct answers and at the end of each
set of activities there is a game. Heine-
mann has covered this ground with one
program operating on three levels,
Punctuation Pete, Unlike the Black-
board programs, there is no opportunity
to change the text and it is therefore a
much less flexible package.
Finalh/j 40 Education Games for
the Spectrum, by Vince Apps, Granada,
£5.95, is a cheap way of providing
programs in this field. It includes a
spelling test. Hangman, and speed read
ing as well as mathematics routines.
All the programs relkct current edu-
cational emphasis on drill and test, and
are electronic workbooks, They fami-
liarise a child with the keyboard but
often than that offer very little which is
new. A more creative approach in the
field would be to concentrate on the
computer as a writing tool, as adults
would use it, to refine and correct a
piece of written work.
Heinemann. 22 Bedford Square. London
WCIB 3HH.
Jimjams Software, The Radio th, Plealey,
Pontes bury, Shrewsbury SY5 OXF.
Longman Software, Longman Group Ltd,
Longman House, Burnt Mill, Harlow, Esse*
CM20 2JE.
Scisoft, 5 Minster Gardens, Nawthorpe.
Eastwood, Notts.
Sinclair Research. 25 Willis Road. Cam
bridge CB1 2AQ.
Transform Ltd, 41 Keats House, Porchestor
Mead, Beckenham, Kent,
Widgit Software. 48 Durham Road, London
N2 90T.
SINC1.AJR USER tebntary lUHt
1 J-9
m
Special offer
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SINCLAIR USER February JSW
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122
SINCLAIR USER February 1984
aSm
LUNA CRABS
By M.J. ESTCOURT
HAUNTED HEDG
By DEFiBK BRjWSTER
• EATH GHASfr.
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re Ltd 230 Lavender Hill London SW11 1LE
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From
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The adventure with
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The first truly educational adventure for the 4SK
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514 4871.
SINCLAIR USER. February t$34
125
Andrew Hewson helps you to iron out
difficulties with the ZX-81 and Spectrum
Simple hints on some
common complaints
RECENTLY I have been working
on a hook which is based on a
compilation of all the columns I
have written and it has given me the
opportunity to review all the letters 1
have received. It has been an interesting
task. Initially the letterSj except Tor a
few on the ZX-80, were about the ZX-
81, because the magazine was launched
in April, 1982 before the Spectrum was
announced. From September, 1982 the
number of Spectrum letters gradually
increased and nowadays the ratio is
about two to one in favour of the later
machine.
The sophistication of the questions
has also improved. In the early days
most readers were interested in the
details of Sinclair Basic, or wished to
know how to PEEK anoVor POKE the
display. Now, there is usually a fair
proportion of questions from readers
who clearly already possess a reasonable
knowledge of the Sinclair ROM.
One observation stands out from an
analysis of all the letters I have received
— thai about 15 percent of all queries
concern readers' inability to make a
particular piece of hardware or combi-
nation of hardware function satisfactori-
ly. For example, about 10 percent of all
ZX-81 questions concern SAVEing and/
or LOADing problems, A similar pro-
portion of Spectrum owners complain
that they cannot obtain stable colour
television pictures.
Since this issue will appear at a time
when tens of thousands of new Sinclair
users will have recovered from the ex-
cesses of Christmas and will be using
their machines on winter evenings, I
thought it would be appropriate to re-
peat some of the tips which have ap-
peared previously.
The ZX-81 produces a black and
white TV display. All television sets
give a satisfactory picture although the
Ferguson TVs sold by W H Smith,
among others, give a particularly crisp
and stable picture. There are three diffi-
culties with the machine.
The first is that the keyboard is poor,
so many owners purchase a second one.
Of the number on the market 1 would
hesitate to recommend one in particu-
lar. All the keyboards 1 have seen are
reasonably satisfactory, although my
impression is that the more expensive
ones are likely to prove to be better
purchases because the keys tend to be of
better quality.
In some cases the ZX-81 is connected
to the keyboard via the rear edge con-
nector. In other cases the entire ZX-81
is installed inside the keyboard case.
There is little to choose between these
two approaches. In the former case
making the connection is easy but the
result is rather untidy. In the latter case
users need a certain amount of confi-
dence in their DIY ability, because it is
necessary to dismantle the ZX-81 and
thereafter the printed circuit board in-
side.
The second problem with the ZX-81
is that the IK of memory in the basic
machine is inadequate for all but the
simplest tasks, so most owners buy ex-
tra memory which, except for those
units designed to fit inside the second
type of keyboard described, is plugged
into the edge connector at the back of
the computer. Unfortunately, the con-
nection can be rather tenuous; jarring
the machine can be enough to disturb if
momentarily- That is sufficient to wipe
the memory clean of its current pro-
gram, so that the poor frustrated user is
tempted to "jar" the computer a few
more times — and rather harder, too.
Some of the add-on memories on the
market are supplied with double-sided
sticky pads to counteract this RAM
wobble problem and at least one manu-
facturer supplies a special plastic sup-
port. Most users employ strategically-
placed pieces of sticky tape.
The ZX-81 does not recognise imme-
diately more than I6K of RAM and so
most users buy that much additional
memory. Colin Jones of West Brom-
wich, however, has a 64K RAM and he
has stumbled on a problem. He writes:
I am puzzled. My machine keeps
crashing due to what appears to be
lack of memory when I add just one
more line to my Basic program,
which at present occupies only
15451 bytes, there being a further
27477 bytes free.
The source of his problem is the ZX-
81 display file. An obscure feature of
the design of the ZX-81 causes the
machine to crash if a TV picture is
shown while the display file straddles
addresses 12767 and 32768. In fairness
to Sinclair Research, it does not happen
if the ZX-81 is used as designed with
only 16K of RAM.
In the ZX-81 a Basic program starts
at address 16509. The display file lies
immediately above the Basic area and
occupies 793 bytes. A quick calculation
shows that Jones' display file currently
ends at 32652, just 16 bytes short of the
illegal boundary.
The solution to the problem is to put
the ZX-81 into FAST mode and enter
into the program a long line with at
least 100 separate numbers in it. For
example 10 LET A = + +
+ 0.
Such a line is rather tedious to enter
but it is well worth the effort in the
circumstances. While the line is being
typed-in it is stored in the editing area
which lies above the display file in
memory.
On completion, i.e., when the new
line key is pressed — the screen goes
blank because the machine is in FAST
mode and the line is transferred to the
appropriate place in the program area.
Numbers when stored in the program
area are followed by six "hidden" bytes
which are used to store the floating
point form of the number. Thus each
* + " occupies eight bytes in the
program area — one each for the " "
one for each " + " — and six hidden
bytes; so the total line occupies rather
more than 800 bytes. The display file is
moved up in memory by that amount to
accommodate the increased space re-
quirement in the program area so that it
lies completely above address 32767
when the display resumes.
The user can then continue to add
program lines as usual. When a suffi-
cient number have been added the mon-
12a
SINCLAIR USfcR b'tbrwtrw iW4
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=
Helpline
'Hlbi. (Ml
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, . /
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V
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— ■
■ Pkajf 4iiir«i problems and queries to Andrew
HtKson, Helpline, Graham Chit, Bfewiwry,
Oxjiirdihirt:.
ster line can be deleted, having served
its purpose.
Incidentally* a machine code routine
Located above address 32767 in the ZX-
81 will not function correctly, as Brian
Gentle of Milton Keynes has dis-
covered. The best location for machine
code for those with 64 K RAMs is be-
tween addresses 8 192 and 16383. Code
placed there will not be over-written
and will remain in place when a new
Basic program is loaded from tape. Pro-
vided the code is fully relocatable it can
occupy any address in that area.
The third problem is that many users
have difficulty SAVEing and LOADing
programs to and from cassettes- John
Martin of Saffron Walden is the latest
in a long line of readers who have
written on the topic. He has analysed
the waveform recorded on a number of
commercial tapes for the ZX-8 1 and has
noted substantial differences in their
appearance. Nonetheless, each LOADs
satisfactorily most of the time. He has
much more difficulty with cassettes
which he has recorded than with pre-
recorded software.
Martin's story is not unusual. The
fundamental problem appears to be that
the ZX-8 1 is rather deaf. Some cheap
cassette players are incapable of provid-
ing the relatively high signal levels nec-
essary ro LOAD a program successfully
without introducing too much distor-
tion.
Unfortunately, more expensive stereo
cassette players which deliver higher
signal levels do not solve the problem,
because they contain sophisticated cir-
cuits designed to improve the quality of
audio recordings but which introduce
more distortion into recordings of com-
puter data. There is also the danger that
the very high signal levels produced by
some expensive cassette players could
damage the computer. My advice to the
beginner having difficulties of this
nature to ensure that the ZX-81 will
LOAD programs satisfactorily is by tak-
ing it to a friend or neighbour who has a
tried-and-tested combination and at-
tempting to LOAD a pre-recorded cas-
sette from his player into your
computer.
So, clean the playing head of the
cassette player carefully and connect
one wire only from cassette player to
computer — i.e., EAR socket to EAR
socket. If repeated attempts to LOAD
several cassettes all fail, return your
computer to the shop from which you
bought it and exchange it for another.
You may find that the program ap-
pears to LOAD but the LISTing on the
screen is garbled and the program fails
to function correctly. In that case you
can be reasonably sure that if you per-
sist in your attempts, perhaps varying
the volume setting slightly, you will
succeed eventually.
Having established that your ma-
chine works with your friend's player
the next step is to try your own. Put the
tone control, if present, to the highest
treble setting and turn the volume con-
trol to maximum. Play a few r seconds of
a pre-recorded tape without a plug in
the EAR socket so that the loudspeaker
is activated. If the "very harsh high-
pitched buzz" described on page 108 of
the two MIC sockets and keep it well
away from your TV set. If you cannot
record a very harsh high-pitched buzz
which is more or less as loud as the
program on a pre-recorded cassette, re-
turn to your friend and use his equip-
ment to determine whether it is your
ZX-81 or your cassette player which is
at fault.
Assuming that you can SAVE pro-
grams satisfactorily, you may well find
that they are less easy to LOAD than
pre-recorded material. That is because
your cassette player does not record
with the same fidelity as the equipment
used to produce commercial programs.
There is nothing much you can do
about it except to make multiple copies
of all programs, so that if one copy fails
you have at least one more copy. There
are a number of rules to observe when
using cassettes for storing programs;
• Keep them free of dust by storing
them in their library cases. A drop-out
which would be barely noticeable in an
audio cassette will stop a program from
reLOADing.
• Keep them away from the television
set. The strong magnetic field present
will degrade the recording,
• "Exercise" them occasionally, i.e.,
fast- wind them from one end to the
other and back again. That will mini
" About 15 percent of all queries concern
readers' inability to make a particular piece
of hardware function satisfactorily"
the ZX-81 manual is loud enough to
send the cat diving for cover and wake
the baby next door, it is probably suffi-
cient for the ZX-81 to LOAD the pro-
gram.
When your ears have stopped ring-
ing, re-wind the cassette and try LOAD-
ing it into your ZX-81. Observe the
pattern on the TV display. When the
program is LOADing, the display
should consist of broad but unstable
horizontal black-and-white bands.
If the signal level is too low, the
white bands will be broader than the
black If it is too high, the black bands
will be broader than the white, to the
point where almost the entire screen is
black. Adjust the volume setting until
neither black nor white dominates, re-
wind the cassette and try again. You
should find that the tape LOADs, per-
haps after two or three attempts.
Finally, SAVE a short program from
your ZX-81 on to a fresh blank cassette.
Ensure that only a single wire connects
mise "print through" from one layer of
tape to the next and even taut and slack
areas.
• Keep back-up copies,
SAVEing and LOADing programs is
much less of a problem with the Spec-
trum, A number of readers complain,
however, that they cannot obtain satis-
factory colour TV pictures; either the
colour shimmers too much for comfort
or it cannot be obtained at all. It is very
difficult to recommend a particular
make of TV as requested by John Anton
of Ashford. I used to feel that the
Ferguson TX range worked well but my
company recently bought one of the
new models in the range and it is not as
satisfactory as previous purchases.
My advice is to try before you buy if
at all possible. xViost TV retailers will
allow potential purchasers to test the
TV of their choice with their home
computers, provided the shop is not too
busy with other customers.
GoniintifJ <?*) page I2H
SINCLAIR USER. February 1B84
127
— Helpline
M from pug* 121
A number of readers are uneasy about
the difference in practice between the
16K and 48 K Spectrum. Derek Burn of
Chalfant St Giles writes: Can all 16K
Spectrum programs be run un-
changed on the 4SK machine? I am
prompted to ask by seeing 1GK pro-
gram listings which have an adden-
dum giving modifications for the
48K computer.
The strict answer to the question is
no. There are small differences in the
use of RAM between the two machines
and so minor variations are needed in
some programs to take account of those
"My advice is to try
before you buy if at
all possible'
1 1
differences. The principal difference is
that both the ZX-81 and the Spectrum
use memory from the bottom upwards
and the top downwards, wiih all spare
memory concentrated in between.
Clearly if 32K of memory is added at
the top 6i the machine, the materia]
which was previously at the Top of
RAM must be moved up by 32K to
amalgamate the extra memory into the
spare area. Certain system variableSj
RAMTOP in particular, enable the ma-
chine to keep track of those alterations.
In practice, the difference between
I6K. and 48 K programs is usually very
small and can be accommodated by an
addendum to the program listing. You
will find that all pre-recorded 16K pro-
grams on the market will also run on
48K machines, although the converse,
of course, is not true.
Unfortunately there can be difficulty
with some commercial cassettes when
programs are LOADed into a Series 111
machine, Norman Godsmark of
Witham asks in some annoyance: How
much software is being sold to un-
suspecting owners of Series HI
Spuci rums which will not operate
with their computers?
The answer, fortunately, is not very
much. The problem has arisen because
Sinclair recently released a slightly-
modified version of the new machine,
the Series III, which responds different-
ly to the IN command compared to the
previous two models. To test your ma-
chine enter
PRINT IN 16602
A Series I or Series II machine will
respond wilh 63, whereas a Series III
will respond with 191, The IN com-
mand, or its machine code equivalent, is
used in a number of commercial pro-
grams to read the keyboard; that is the
source of rhe problem, ffthe program is
in machine code and the creator was
cautious when he wrote it, the program
will interpret automatically the input on
both types of machine correctly and so
the difficulty is not as widespread as it
might have been.
If you encounter a problem of this
nature, contact the software house
which publishes the program and ask
for a replacement copy.
Bn- ihf> , <ml, ,-..., ' 'r .
hrnq
M'Slrtdy D.i' i.trniul. i- J .
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r#d erf blue ice r-
To,. ;■:,.,.!■.■ ■
-
irounri fVrvn •■ i ia« rt
I ■ ijf thr» . ,!fjp
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tdpt
p.ii »f.i i.
.. ,;,.'f smooth nr.ii.l
'i, j ,,'nl |mii..,i r ks :. . ,1 iIh-
• ti<ftv hci". .mil
I 1111 .'l>1 '
ANYSPFCTRUM
'Og/0
0*
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wmmmmm
4*K SPECTRUM ONLY- The
ir«amr*t or TUTANKHAMUN
•ft »*tl*m«— bui m ace Hie
Cfealures Ihat guard ihem
E-ipfQIt |r>( ptiarflrjh s 10T"t)
*fiiCh it 4 V#ry large series or
|*rolling mm; separated by
lotlud doors You have a
Um iTerj (ijttb 1 □ uo lock the doors
wirh rhe keys and escape *ilh
ln-a treasure Luckily you art
armed t*nh lasers anil sma'i
bombs as you will Jiave 10 lace
a horde of guardian cobras.
spiders, iki.lls. msmifri and
mumniir) TyTANRHArUIUrV is
vHiai you'd eipfrC! from Mictd
mania — lasi. lunoux arcade
ac1iqnp»i;**(J full of arcade
fealure-s IWt mtchnne cod*.
la 51 imooin, hir*-s arcade
action, tomb is over *Q
" screens" 1ona,. opening doors.
Keys, "eiturfri. mapi. level
selection, sound effects and
1 unes
CVBDTRDn
SPECTRUM GAMES GHOST'S
REVENGE
«ww ram snoot m* g*i> tn> 5tsea
tan i#¥t yju bom Itw r.haoiiC ruot*^ PmXwJ iiM iji
feriim Fou hfpm r* \ctxn, Dumtn mull nftic tonal
pKsmalufn 14) lo 50 NriHHatJ* Screen I OOlnnjcnm*
cod* Kurn*irt*inMie«i|«irim1iDn^l(i.|nrli^Kl ANY
keyboard only operadon
100 r n machine code, fast,
smooth, hires arcade action
Kemustun, cursor key, juysiick
or keyboard operation Games
available direct f"5 95 mc
p ■ p ?4 HOUR DESPATCH,
or from good software outlets.
Trade enquiries invited Good
programs always wanted.
MICROMANIA
14 LOWER HILL ROAD, EPSOM, SURREY KT19 8LT
*HV SFECTFUfM fi**rc**el*Ifui*S. ™sH«f<<»irfjf.i..M)
-fOuKCOlOurMlcptu-it:'. dnlanij|KHW(XXjt <mn, irldfcgml
■ i-j%*-<j-i,jn<i«Tq qhosii tir t*ua ffmatw fur bonu***.
i ^irici ri f ^m.v ,« invi&eJlE nun. id drieieiK tttta
able tevet* IDQV rr«ciw« code aeiian jmrjikwn i*sr
qraotucs. souin] bNei B -!"■■
128
SINCLAIR USER February !9X4
AIRLIHE A wing and a prayur «*
rex be enough lo lurn your C3
a to ned. txJ four financial wizardry
** enable you » *•* DV * f British
Arwayl Of **1 *? Runs 1*1 ^Kfll
IfiH - ES and Sp*e»rum 16^48*
-EB
CORN CHOPPER i- imi<ed cash and
dtwQfiK are 1*o oi 1lM» problems
■nng me larrnet Planting reniliimg
anl harvtisfcng mull all b» done
BOOreifinGalljf fl you are 1o reap Ihe,
wr*** Ottered in com cropper ,
R*BonZXB1 1W - C5and
Spectrum 15K.'*8X — £6
AJTOCHEF ifou nave a — •"■on m
Opt* and need lo increase 1rn5 (a
C2S nulhnri ir Tie- shortest Dme
rjossoe iTtlabon strikes. SluJHisn
markets are only some art Ihe
nararcK ID overcome Run* <m
OSl 1-tjK — £5 and Spectrum
I6K.'4*K - C6
SMUGGLER As maslor ul j 191h
century vessel you plough between
England and the confcnert viSfttfirj
pens to buy and Sell your cargo
but beware the customs, man,
pirates and gak lores winds Ben ail
run you aground Runs on
Spectrum 4SK - 15
DALLAS .in you amass enough
petro dollars K> lake over the Euing
empire Cuf throat busyness and an
eye tor the main Chance may gel
you there but you ll .Teed nerves Oft
«tMl lo become Lie E"l king ol
Dallas Runs on ZXBT 16K — £5
and Snecjmm 1 6KJ4SK £5
PAINT SHOP ■ . mm snap are
scfieduung. staffing, purchasing, and
quCHmg. within (his bene limit wiil MM
your tJuEiness acumun lo rue tufe
and v»o«**y ftatance. sheets, w*
prove Ihe quality ai your deoSJOn
making Runs on ZXBT 16K — £5
■mJSpoarur" 16Ki'*6K se
PLUNDER Can you Binge Ihe Kmg
of Spam's ueanJ I. ngage the
Soamsri ships on Ihe high seas
Survive their broadsides and
pturtder Ihe gntd destined lor Ihe
A/made and you might gal your
Knightiirxxl ftrfitnre Francis Drake
Runs on Spectrum 48K
GANGSTER Are you cotd hearted
and caHaus enough to warrant ihe
Mil" ol Don You need lo be it you
are to nse lo the top Ofl the pie A
quick Ifitjger linger and an even
quicker brain are needed to control
the mobs and then rackets Rune
on Spectrum 4BK - £6
BRITISH LOWLAND rou are given
a racing start lor your SftJJll Sports
car company tKit you have an
Overdraft to repay and a we/Merge 1o
be hei» nappy Sleer your way to
Success *rlh careful rnarwoftinfinr
and intlusin.il relations Runs on
Specinjn 4SK - £6
ABYSS Car* you putney across the
Iprvg-toropften Abyss and Out"* the
evi monsters Ihat kjrk m (tie shadows
awaiting trie toothardy and i t Hr e ttt t
adventurer There *r« many/ bridges
■ndmany monsters Wit you beiv
one to make m» Abyw gate 10 cross
again Runs on Spectrum 44JK
BVTE Cornptete Ina ten aremts you
need Id build yetui computer syslBwi
men re*u< n home Easy Byte has
Bert *5 eJectromc monsters 10 h*»y
you IhrrjUph ItW llvae ckmBriBm™f
man of circuitry . il any of Ihtm
catcfi you Rur<i on Speclrurn
48K £5
Available from W H Smith, Boots, Rumbelows and all good computer
Cases Computer Simulations Ltd., 14 Langton Way, London SE3
CAMEL QT A, me tMmhed Arthur
Pendragon you musl and seven
IreasureS wNirjui tailing prey to Ihe
Brigands, dragons an::
Magjoan* that utand m your way
and make a tnumphanl idutn irj
Camekil 10 oe cro*ned Ktrig Runs
on SCSI 16K - SS »™j Spackunt
shops or
7TL,
CC
Strategy Games. They're no pushover
SINCLAIR USER Ftbmury 1984
U**
THE WIN
Here's a sure-fire way of making certain 1994 is packed full of fun for you and
your friends. We've searched for brilliant new program sources throughout the
U.K. and North America to find an exciting collection of new games — and
business programs — many of which cannot be bought by mail order from any
other source! These are our latest exclusive offerings.
^c:/
*
F JJGHT Sl
mu LATlON
FREE BLANK C15 COMPUTER CASSETTE
WITH EVERY TWO CASSETTES YOU ORDER!
Remember there's no limit to the number of free
cassettes you receive if your order justifies them — so
why not get together with friends or user group
members and share the fneebies?
GREAT VALUE! TREMENDOUS SELECTION! PLUS A FREE
OFFER EVERY TIME!
Rll in the order form right away — we're guaranteeing fast
delivery, quality and satisfaction [after all, we want you to
come back for more ! ]
The Software Workshop, Yew Tree, Selborne,
Hants GU34 3JP
INERS
1984
SNOOKER •
r»s Snooker brings all the
I alt the tension of big
- !o your TV set With
n written by a
19 year old undergraduate at
ueens College Cam budge, «t t£
- took, like a load
ns Snooker lot
16K ZX Spectrum lis an
I test of your skills on the
i j
Cassette price: E895 »<
Ref. No: 2-53 *5
SHEER PANIC*
Mining fen Magnetic Q
hazardous business. You have to
ensure • y of oxygen
••gnt off the local
monsters with only a shove) and
counter interference with vour
consciousness.
ZX t6Kor48K
Cassette price: £5.95.
And here's a further
selection of the latest
games, the best value
software for your Spectrum
2-13 Sentinel
Guard you mother ship against alien
attacks 48K RAM £4,95
2-14 Meteor Storm
Spectrum version ol the ever-popular
arcade game 1 6K or 4flK RAM E4 .95
2 15 Star Trek
Popular space program thought to
life by excellent g* • RAM £4.95
2-2 1 Frogger
Mai ■ ■ Trog across the road
avoiding heavy traffic 48 K RAM £5.95
2-23 Arcadia
The expert s version of itie pop
invaders' game, 16K or43K ram £5.95
2-24 Golf
The finest of qnli 'Kinrlicap games
4UK RAM £5. 95
2-26 Derby Day
■ has to be a winner.
w- RAM E5.95
Ref. No; 2-51
To: The Software Workshop, Yew Tree, Selborne, Hants GU34 3 JP
I wish LP order the following programs. I understand that:
* I wHI receive a FREE Hank cassette with every 2 programs ordered
* I can return products within seven days if not entirely satisfied arid
receive a replacement .
Ref No
Oty
Title
Postage, packing and handling: add 45p for the
first cassette, and 25p for each additional
cassette Non-UK orders add extra 50%
1 enclose a Lihegue/postal order for
Name
Total
Price
Address.
(Allow 28 days MAXIMUM FOR DELIVERY]
RICHARD SHEPHERD SOFTWARE
A HOME BUDGETING & BANKING SYSTEM
THAT REALLY MAKES YOU
48K SPECTRUM WORK!
f
I
^
>=k
MICRODRIVE
COMPATIBLE
£3££V
A professional style multi function
Cash Controller program that can
load and make an entry in just 90
SECONDS . . . thanks to its ZX
MICRODRIVE COMPATIBILITY- If
you're not ready to upgrade to
Microdrive yet, this easy to use
cassette program can handle up to
400 transactions with your
Spectrum, almost filling the 48K
memory of your computer.
BANK ACCOUNT
• Statements on demand from any
date to date
• Holds up to 400 transactions,
• Standing order facility
• All transactions can be
automatically coded to allocate up to
16 budget headings
• Search facility for arty single item
by description or amount
HOME BUDGETING
• 1 6 bu dget headings, e g Gas,
J?ates r Car, Tax - you can choose the
headings
• HighNghts under/over spending
• Full budget expenditure
breakdown
• Budget re-think " facility
LOAN/MORTGAGE
CALCULATOR
Ail you ever wanted to know out
didn't like to ask' Calculates
• Interest rates
• Payback periods
• Capital sum
• Period of loan
REMEMBER THIS CASSETTE
CAN ALSO BE USED
WITH ZX MICRODRIVE
• PRINTOUT FACILITY
USING ZX PRINTER
• FULL SECURITY WITH
PERSONAL PASSWORD
• FULL SAVE PROGRAM
ONTO CASSETTE OR
MICRODRIVE
Available from good computer
stores or direct by mail order...
At a price that won t upset
the Bank Manager!
CZL
£9.95
INC P & P
MICRODRIVE
CARTRIDGE
V NOT INCLUDED
^^- ■ >- ■
Dealer enquiries
welcome.
Generous discounts.
FIRST FOR
MICRODRIVE
Dealer enquiries welcome. Generous discounts.
nj.jM:i..j'Mir."n
Please
CASH CONTROLLERS
at £9 95 each »r»dudir>g post £ packing |cverse t « ■
orders add E. ) 50|
ISkime
Address
F enclose <- .isn/eheque/P O payable to Ririwrt
Shepherd Software
Or credit my Access/ VfSA Card Number
rr
n
:
Credit Card Hotline (06286) 63531
Siqnature _
MCROORIVE CAHTHDCZ HOT INCLUDED
RICHARD SHEPHERD SOFTWARE
ELM HOUSE, 23-25 ELMSHOTT LANE. CIPPENHAM. SLOUGH, BERKS TEL (06286(6351!
64 CHARACTERS PER LINE ON THE SCREEN AND TO PRINTERS!
MICRODRIVE COMPATIBLE — instructions supplied
TASWORO TWO The Word Processor
Your Spectrum becomes a professional word processor
with TAS WORD TWO TASWORD TWO gives vou an amazing
64 characters per line on your screen. This is ideal for standard
A4 paper and TASWORD TWO prints your text just as it
appears on your screen.
Tasward Two drives the following interfaces-'
Cobra RSZ32 UO Port Kempston interface
Euroelectronics Interface Morex Interface
Hitderbay Interface Tasman Interface
Sinclair ZX Interface J
The same program drives these interfaces. A short easy to fol-
low set of instructions takes you through setting up your Tas
word Two to drive the interface you have or choose to buy.
Tasword Two also drives the ZX printer.
£1 3'90 fully inclusive mail order price,
TASWORD TWO TUTOR
TASWORD TWO comes complete with a manual and a
cassette. The cassette contains your TASWORD TWO and
TASWORD TWO TUTOR. This teaches you word processing
using TASWORD TWO- Whether you have serious applications
or simply want to learn about word processing, TASWORD
TWO and TASWORD TWO TUTOR make it easy and enjoyable
TASWORD TWO £2 Demonstration Cassette
See for yourself the powerful features of TASWORD TWO.
Send just £2 for the Tasword Two demonstration cassette. A
voucher is included which gives you El off the price of
TASWORD TWO
TASWIDE - 64 characters per line!
A machine code utility program, TASWIDE doubles thi
information that your own programs can display. Make a
simple change to your print statements and your output
appears on the screen at 64 characters per line instead of the
normal 32, Bath print sizes can be mixed on the screen. 16K
and 48K versions supplied on the same cassette.
£550 fully inclusive mail order price
TASMAN PRJNTER INTERFACE
Plug into your Spectrum and drive any printer fitted with the
Centronics standard parallel interface. Supplied complete
with ribbon cable, connectors, and driving software, The
cassette includes LUST, LPRINT, and tent screen copy
software for all Centronics printers and fast machine code
high resolution screen copy software for Epson, Star,
Seikosha, end Tandy Colour Graphic (in colour!) printers
Send s.a.a for sample print-outs and full list of printers sup
ported by screen software.
£45 fully inclusive mail order price
All prices include VAT and post and packaging
TASMAN SOFTWARE
DeptSU
17 HARTLEY CRESCENT LEEDS LSG 2LL
E3
Send cheque P-O- or Access number with order.
Telephone Access orders: Leeds I0532I 438301
VALUE that's
out of this work/
50 GAMES ON ONE CASSETTE
DRAGON CDO Bab Spectrum ^nppta ATARI ORiC 1 ZXBi VK» 99
' ll is impassible la
tell you everything
about the 50 games on
CASSETTE 50 but th#y include
many types such as ma*e, arcade.
missile, tactical and logic games
tr> suit mast tastes in computer
gamft plflyinq
CASSETTE ■ 50 wilr appeal to
people ol all ages and the games
will provide many hours of
errierl»inrYiem (Or all The family at
a tractpori of the cost of ether
computer games. ■
EXPRESS DELIVERY
ORDER NOW
Pleas* send m by return of post. Cassette SO at E9 9S
per tape. I enclose a chequerposla) ord&r iw
made payable to
Css-cade Games Lid
LT
IM.nr ,•
Please debit
my|FT^No.l
Address
SPECTRUM
BBC MB
B
DRUM
DfiAGOK
ZX SI
ATARI
Bwca [
APPtE 1J[7]
Post Code
Country
Deafers & Stockists enquiries welcome.
cascade
-d- b li
- O —
Cascade Games Ltd.,
Suite 4, 13 Haywrra Crescent Hafrogmtt,
North Yorkshire. HG1 5&G England
Telephone: 10423) 504526 su 2 , a
SINCLAIR USER February 1984
133
Due to an exclusive distribution agreement,
DEAN are now able to offer the ALPHACOM 32
Thermal Printer at the fantastically reduced price
of £59,95 inclusive of VAT.
Includes full interfacing to the ZX 81 or
SPECTRUM. Uses the standard Sinclair print
commands (COPY, LLIST, PRINT),
Quiet, maintenance- free — highspeed operation.
Paper rolls only £1.00 per roll - 25 metres long,
fllphcicom 32
This thermal primer, now available in the UK, is the
standard printer which has sold in tens of thousands
for use with the American version of the ZX81.
DEAN ELECTRONICS LIMITED
GlendalePark, Fernbank Road,
Ascot. Berkshire SL5 8 JB
Tel. 0344 B85661 Telex 849242
SPECTRUM
COMPATIBLE
PRINTER
Or from selected branches of W H Smith
JohnMenztes, Greens. Lsskys, Spectrum Group
■ ^^m ^^h rtiB ^^B 1^^ ^^" ^^* ^^* ^^" ^^" ^^^ ^^ m
Pieasa send ma ......... Printed*} at £61.95 and ,.,-mp*.>. bones of paper
(10 rolls p*f bo*) at £12 p*r bo« - all inclusive of post and packing.
Total £ .. cheque /PO enclosed or debit my Access; 1 Barclay
card account No. ,.,.,..,..... ..,-*.,.-» .... ■
Name and address
su
Also sua liable - Alphacom 42 compatible with Commodore 20/64, BBC
I Centronics, Dragon, Atari at £99.95 |+£2p/pl include* s*lect«d interface.
KERIMOW SOFTWARE SERVICES LTD
SOFTWARE
LIBRARY
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Compare these features with our competitors and you will see
why mora Spectrum owners are joining the Kemow Software
Library. Join today by clipping the coupon below or send a S.A.E.
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1J4
SINCLAIR USER February {984
Mind Games
Quentin Heath's latest round-up
New paths explored
in Norse adventure
THHRH IS a change in direction
for adventure games. The path
taken so far by authors has been
through text -only displays, which left a
great deal to the imagination, through
graphics adventures which looked like
board games and then on to animated
games.
The progression was by necessity
rather than design. The first adventures
were produced on large mainframe
computers. The original Adventure,
written by Crowther and Woods, occu-
pied most of the memory capacity of
one of those giant machines and includ-
ed more than 200 locations. A micro
version of the game is available from CP
Software, Syrtis Software and Abersoft.
The reason it was text-only is that 10
years ago computers communicated
mostly using teletypewriters or line
printers. There was no room for graph-
ics on those relatively primitive ma-
chines.
The arrival of the microcomputer
and its reliance on fairly inexpensive
television sets or visual display units
gave adventure authors the opportunity
for which they had been waiting. Few
people^ however, accepted the challenge
of adding graphics to adventures.
There was a gap of at least two years
before authors began to use the full
potential of the machines. Until then
users of micros had to tolerate text-only
creations, such as the Artie adventures
for the ZX-81 and the Spectrum,
The next step was into software
which generated still pictures of some of
the locations which could be visited
during the game. That type included
The Hobbit from Melbourne House,
the Mysterious Adventures from
Digital Fantasia and the illustrated
games, such as Magic Mountain arid
Greedy Gulch from Phipps Associ-
ates,
A progression of the technique fol-
lowed a few months later with the
launch of the Carnell Software Black
Crystal for the ZX-S1 and Spectrum, It
is like a board game as it uses several
maps of the terrain on which the player
moves. In the proper circumstances the
player can move into a castle on one of
the maps and on to another map show-
ing the castle interior.
Not content with that limited form of
moving graphics adventure, some com-
panies decided to go a step further and
produce something which was a cross
between the Hungry Horace cartoons
and the original adventure game con-
cept. The two companies to the fore of
this move are Legend and Doric Com-
puter Services.
Doric has produced Oracle's Cave,
the Spectrum version of a ZX-S1 game
which bears some resemblance to the
W um pus- hunt type of adventures
which were, at one time, all the rage in
the ZX-81 market. It involves your
player-character who has decided to ex-
plore a cave system in which an evil
oracle stands guard over some treasure.
The exceptional aspects of the game
include a set time limit of five game-
days and the sprite animated graphics
which depict your character and the
monsters. As you move through the
cave system the scenery scrolls up 3
down or sideways, depending on where
you are going.
Valhalla from Legend, which is
proving as popular as The Hobbit for
many people, also uses animation. It is,
however, closer to the original adven-
ture goal of completing certain logical
tests or solving some puzzles. Unlike
Oracle's Cave, Valhalla also allows you
to use English sentence structures to
give commands to the characters.
Every scene in the adventure is
shown graphically and when you ask a
character to perform an action that
character will move on the screen.
In many respects the game is more
technically-advanced than The Hobbit,
although much of the code is written in
Basic. The graphics are drawn more
quickly than those of The Hobbit and
the characters taking part seem to have
more independence.
Through a kind of time-sharing sys-
tem between the gamer and the pro-
gram it is possible lor a player to be
entering a command and for the com-
puter to be moving one of the characters
across the screen-
Trie author has used a novel com-
mand entry system. If part of the com-
mand is not in the command
recognition database, or is unintelligi-
ble, the computer will mark it in red
and not accept the command. It may,
however, allow it to be entered and then
make no reply to the player or forget
about the last command.
The plot of Valhalla, in essence, is
like that of Oracle's Cave. There are
several quests you have to complete
before you can go to the Norse warrior's
Hell and live out the rest of your death.
You have to get a series of sacred
objects, including a key, a helmet and
an axe which will give you certain
powers. To do so you have the help and
the hindrance of the characters of Horse
mythology including Thor, Odin and
Loki. During the quest you have to eat
and drink to stay alive.
The authors have not been content
just to make your characters pick up
food or drink on the screen. You can
watch them put the bottle or meal to
their mouths, mimicking the act of
drinking or eating.
Next month I will be looking at
Circus, an adventure from Digital Fan-
tasia, and launching into the first part of
the Penguin Korth Trilogy, Escape
From Arkaron.
HINTS AND TIPS
It is unwise to travel ring roads when you
are a novice. You could get lost.
It may seem as if there are two sides to
every coin. Only one side w-ill help you
win and avil is in its way.
To gain the first objective you will need
to gain a friendship.
SINCLAIR USER February 1984
1J5
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and postage and packing
Nome .
Address.
Access
Bare 1 3y tacd No
QUANTITY
HEF
Please send me total enclosed
further information
with no oolioaliori D ^e* if required
AMdutrr
KELWOOD COMPUTER CASES Downs Row, Nloorgate, Rotherham Td: <0709) 63242
! M
SINCLAIR USfcfc ftinflfy /SlW
■ i ■
■■!
THE MONTHLY CASSETTE MAGAZI
FOR THE 16K & 48K ZX SPECTRUM
TAPE 04
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We wish to apologise to printer
owners for turning on their motors
with "D&G" in Issues 2 and 3.
Avoid this by editing line 1400 to
change the two OUT statements
to OUT 254 instead of OUT 154.
Sorry! (OUT 154, 4 will turn it off).
This is where you will find Issue 4
of the magazine
which you can read, play and USE.
This month we even have a program which writes
another program and then deletes itself!
You can make sure of your copy and save money with
our special UK Subscription Rates.
6 ISSUES £15 12 ISSUES £28
Pleas* send me issues of 16/4S starting with Issue No
NAME
ADDRESS
POST CODE
Postto 16/48 Magazine Ltd, 10 Barfey Mow Passage, Chiswick, teuton W44PH
Published by 16/48 Magazine Ltd 10 Barley Mow Passage Chiswick London W4 4PH
I
Sometimes even
the best of friends
need something
new to say
to each other.
I want j
To get that excited feeling back again.
Lots more software. But I can't afford it all the time.
Lots of new programs. I know all mine backwards.
To swap notes with other people who love computers.
To know more about computers. And to use what I know.
Most of all I want my computer to do more!
and I don't want
To have a lot of hassle.
Or spend a fortune.
Or have to tramp for miles to find it all
fVcsteT'andttic Prcwe! symtxit ire trademarks ol RricigiiTckcoisnmilRaiiom
I in
SINCLAIR USER February im
You get
An amazing new world of fun and learning,
A system that puts more muscle into many
popular makes of micro.
Dozens of free computer programs and scores
of exclusive software bargains. Through your
own 'phone line. A whole sophisticated 2-way
communication system. Prestef*- the world's
biggest viewdata system, under your control.
and you don't have to
spend a fortune to get it all now.
MICRON ET 800, Scriptor Court, 155 Farringdon Road,
London EC1R 3AD Tel: 01-278 3143,
{ wou)d like full details on Micronet 800
Namp
Make/Model of Micro
Address.
Telephone
MICRONET 600. Scriptor Court, 155 Farringdon Road,
London EC1R 3AD Tel: 01-278 3143.
It's enough to blow the mind of any micro
^ffi^
One of the many faces on Prestel
SINCLAIR USER February 1984
139
ADVERTISEMENT
SOFTWAR]
If we have reviewed a cassette we have given ii a rating
E DIRECTC
known as the Gilbert Factor. That factor includes va
)RY
lue Ibr nioney, the
vii'l-i; Ijvuur. the
conciseness and speed of [he program, the
accomplish meni
of ihc liisk I
t aims to achk
:ve, and the
use it
makes, oil he mac
lint.
Same
Machine
< <ntipam
1 > pe
Gilbert
lai'lnr
Si a me
Machine
( umpan>
1 1 p<
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Rose
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King \nhur
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Knight's Oue>i
48k Spec
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6
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48k Spec,
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48k Spec.
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4ft k Spec.
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16k Spec.
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16 k Spee.
CDs
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48 K Spec.
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9
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16k Spee.
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I6K Spec.
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48k ZX-81
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16k Spec.
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16k ZX-81
University
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48k Spec.
Mel. Use.
Arcade
7
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16k ZX-81
JKS
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*
Personal Banking
Lusl Over Bermuda
48k Spec.
Add-un
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48k Spec.
Hilton
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16k Spec.
Mtcrnmega
Arcade
7
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16k /X-KI
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Ihk Spec.
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1
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Machine (tide
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48k Spec.
IuImiichJ
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16k ZX-81
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48 k Spec
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7
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48 k SpCC.
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16k Spec.
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48k Spee.
Bug-Byie
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48 k Spec.
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16 k Spec.
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16k Spec.
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I6K Spec
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16k Spee,
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16k Spec.
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8
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16k Spee.
Work e'oree
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16k Spee.
I uitersily
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Muths 1 uh>r
16k Spec.
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16k /X-KI
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I6k ZX-81
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I6K Spee.
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48 K Spit.
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Arcade
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16k Spee.
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48 k Spee.
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16k ZX-&1
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16k /X-Kl
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Ink ZX-KI
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48 k Spec,
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8
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l«k Spee,
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8
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16k ZX-81
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Hornby
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7
Melbourne Dra*
48 k Spec.
Melbourne Hm 1
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7
Programmer's
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16k ZX-KI
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7
Dream
16k Spec*
Wtirk I'firee
L lilily
1
Meieornids
16k Spec.
dk" Tronic*
Arcade
7
Programme
Mcltomids
16k Spec.
Sohek
\n:nh-
6
Ivnhanceme nl
Meteor Storm
16k Spec,
QuicksiUa
Ari'HlU-
7
Package
16k ZX-81
H and R
I lilily
•
Miiropen
16k Spec.
Contrast
1 Nitty
#
1* nt k ntii ii
16k ZX-81
Hewstm
\ reach'
•
Mined Dm
16k Spec.
Qukksftva
Arcade
7
PtiiK'liialion Pck'
16k Spec.
II eitte ma nn
1 ilucaiicaaaj
*
Mini", ill Saturn
Purchase l*dp;cr
16k ZX-81
fiesta cretl
Business
■
Kelurn Id harlh
16k Spee.
Mikm-Gen
Adven.
±
On est
48k Spec.
lit'-" St. 11
Adven,
6
Monty
16k Spec.
Puppy
1 dm at ion
BY
Quinc>
4Kk Spec.
Severn
Ik i.l
•
Monitor Diss.
48k Spec.
Sinclair
I lililj
8
Ramnpoly
48k Spec,
J Fletcher
' .linn
*
Mum
16k Spec,
Severn
Adven.
*
Ri d W i til
48K Spec.
l.olhlnriaii
SimiiLilinn
7
M until it
16k Spec.
Silversoft
Arcade
i
Regressiun
16k Spec.
1 1 1 i h i • r m 1 s
UtMt]
8
Mu nc her
16k Spec,
Silversoft
Arcade
6
llt'Llll'^vn.iii
16k ZX-81
1 nivt-rsin
1 lilily
i
MiHk Masier
48k Spec.
Sinclair
KdiKurionul
*
H in ii m he r Delete
16k Spec.
Work Force
Utility
4
Samtir Haiders
16k ZX-KI
Art it
Arcade
8
Renumber Delete
Ihk ZX-81
Wnrh Force
L'lility
1
Sanai
16k Spec.
MJIuno-Geji
Arcade
*
Be pulsar
ihk Spec.
SuHck
Arcade
*
Night Gunner
16k ZX4H
Digital
Sim.
5
Mt'sctif
4«k Spec.
t iiitipuiiT Rem
Arcade
*
Sight Mile
16k Spec.
Hew von
Sim.
5
Htiersi
ihk Spec,
Sinclair
1 raditional
8
Night Ski
16k Spec.
Bridge
Ilility
*
kiMiinUl)\ Irit-iilenl
48K Spec.
Add-on
Adven.
*
Nowomih Puzzle
16k Spec.
Phipps
(janu 1
7
kuiiii-iii
Ihk Spec.
NeWBOfl
Traditional
*
Xomnmk Pn/fic
16k ZX-81
Philips
Game
*
Bi mint c
48k Spec,
ItHllnlllI
1 latliliiiiuil
A
Number 6
I6k Spec
Prime
l£ducalii?n
*
Sales Day Hmik
48K Spit.
1 ransfurtn
Business
*
Oddwm
16k Spec.
RSI)
ilium*
•»
Sales Day BtHik
Uik ZX-81
1'ransfi.irm
Business
•
Level Chemistry
48k Spec,
Calpac
Ldutuliim
*
Sales leii^t-r
I'.k ZX-81
Heslacresl
Business
•
Lei el Chemistry
16k ZX-81
Culpic
l-ldticallon
*
Secret \ alley
Ihk Spec.
New still
Adven.
*
t e*el rench
Setrel Valley
Uik ZX-KI
New soft
Adven.
A
Revision
It.k /X 81
Rose
Kducaliun
*
Securlly Shelter
48K spec
\dtl-on
Arcade
*
SINCLAIR USER February 19B4
143
■
Cassetw Rou„d-u„ 1
Name
Machine
Company
lype
Gilbert
Name
Maeh
me 1 on i pa in
Type
CWfcifl
-P
factor
tailor
Sell -leach Program
16k Spec
Am it
1 ducal ion
*
Tennis
16K Spec, Witners
Cjame
*
Self-teach Program
Ifvk ZX 81
Am il
Education
i
1 en pi ii
16k ZX-81 Phipps
Came
*
Sentinel
IfcK Spec.
\ hat us
Arcade
7
1 c rror f rum
Serpents lomb
16k ZX 81
Vortex
Adven.
*
1 lie Deep
48K Spec Add-on
Advert.
*
1 hi Scltler
16k Spec
HSS
1 lilil>
*
Feel Match
48k Spec Computer Ren,
f puint-
*
1 hi 1 Settler
16k ZX-81
BSS
L lifily
*
The Orb
4HK Spec ( iinijjiiler Ken.
Ad ven.
*
Miu pi 1 Mirter
16k Spec,
Wid>»ei
Education
*
The Castle
48K Spec. Bojj Bylc
Ad vert -
*
Sideways Copy
16k /AMI
l> KJm
I lilih
*
The Devil Rides In
16k Spec <'antell
Arcade
*
sheep* alk
48k Spec
\ iri;in
trJlIU'
7
1 he forest
48k Spec Phipps
Mill.
*
Sheer Pank
16k Spec
Vision*.
Arcade
7
1 he (keat Western
16K Spec. New Soft
Game
•
Ship of Dl>Om
48 k Spec
Artie
Adven.
7
l'hc (.real Western
Idk ZX-HI New Soft
Game
•
Shiva special 1
16k Spec
Shiva
( i.niu-i
*
The Pyramid
48K Spec tantasy
Arcade
7
Shopping 1 !-.[
I6K Spec
SH
L lilily
a
live lurk
44(k Spec. OCP
Traditional
8
Ski Kaider
16k Spec
< M Smith
Arcade
•
iD Star WarK
48k Spec. ViJil-.in
\ieailt
•
slipper* Sid
16K Spec
sikersoi'i
\ ivalle
8
311 Strategy
48K Spec. OS
Mind (.Jim 1
«
Slow Loader
16k Spec
UK
I litilt
9
lime Band Ms
16k Spec. New Soft
Adven.
*
Snail Logo
48 k Spec.
CP
Educ/Lang.
8
1 ime llundiK
16k ZX411 New Soft
Adven.
*
Miixikir
16k Spec,
V hions
Arcade
#
1 ime (jute
48k Spec. OS
Arcade
«
Softalk 1
48 k Spec
CP
I mty
*
1 ohor
48k Spec. Add-on
Arcade
7
Siiftalk 2
48k Spec
CP
L lilily
X
Tomb uf Dracula
48k Spec. Kelih
Adven.
*
Solaris
48 k Spec
Soflil
Adven.
*
1 omb <il DraenUi
16k ZX-81 lell*
Advcn.
a
Svlu Whist
16k Spec
Video Soft.
Tradiiiuital
«
1 race
16k Spec Zen
i lility
*
Sound FX
16k Spec
itK ' 1 ronk*;
t liliii
A
Trace
|6k Spec. lev^ate
Utility
8
Space Ugh (it
16k Spec
Winters
Arcade
*
I raw
48k Spec. OS
Arcade
7
Sparc Intruders
16k Spec.
US
Arcade
7
Irain l>ame
16k Spec Microsphere
Game
9
Spate Lane*
16k Spec.
Cathedral
Arcade
•
1 r;i ii-i Hainan
Space Raider*
Ink Spec.
Sinclair
Arcade
ft
1 nwer
48k Spec Shepherd
Adven.
7
Spare Raiders
16k /\ K1
Sinclair
Arcade
*
Tnxx
48k Spec. QS
Arcade
f
Space Trek
i6k zx-ai
His
Arcade
•
Troon
48k Spec- Hornby
Game
8
Space Zomhii-s
16k Spec.
Miliro-Gcn
Areadc
±
1 ii in. 1 Train Terror
48 k Spec JRS
Game
*
Epanfrfi Cold
18k Spec
Ghalksnfl
Education
*
3D Tunnel
48k Spec. New (ien.
Arcade
9
Speak and Spell
48k Spec.
S j ml i.
1. ilneal inn
•
I ie and Learn
16k Spec Microl
I lility
1
Special *<ciu
16k Spec,
Heine munn
Educational
*
V*thalla
48k Spec. Motisofl
Ad*-en.
7
Spec, Assembler
48k Spec,
Arlk
Utility
*
Veinor'si Lair
48k Spec. OS
Ad\m
8
Spec. But;
16k Spec.
Artie
UHhiy
i
\ nice Chess
48k Spec. Arlk
1 radii ional
«
Spec. Tape Copier
16k Spec.
S Cua
Utiliti
•
\ uli a nil- liiiii'ji'iiii
16k ZX-81 Camel 1
Adven.
»
Spwtadraw 2
48 k Spec.
Me Alley
Utility
•
\ iilciiiin- lliiniii'nn
48k SpCC- 1 aniell
Adven.
A
Specliprdr
Ink Spec.
R anil R
Arcade
8
Vn-Calc
Idk Spec. Sinclair
Business
7
spivrral I'aiiic
16 k Spec,
Hewm
Arcade
5
Vu Tile
16k Spec. Sinclair
Business
8
Spec Compiler
48k Spec.
Soflck
Utility
7
V*3©
48k Spec. Sinclair
1 1 til it y
8
Spec Editor/
Warlord
4Sk spec. Lolhlorian
Simulation
Assembler
16K spec.
Picturesque
Utfity
8
VVhi/y Kid
48k Spec. C. 1 utor
Tduc
Spec. Torlh
48k Spec.
Abenofi
Language
**
Who Dares Wins
4Kk Spec. f.. Midland
Mkeii.
Spec Eorlh
48 k Spec.
CP
I liliUy
«
Wizard's W'arri«rs
16 k Spec Abersoft
Vrcadf
Spec Fnaca
W uril Kit
Itik ZX-81 Ram Writer
Game
Sllimdi.wil
16k Spec.
Artie
Arcade
■r
Word Processor
4Xk Spec. Microl
Busines*j
Spec. Gohbkman
Ink spec.
Artade
*
World Info
48k Spec Wimtoft
I 'til in
Spec Invaders
[nk Spec.
Artie
Arcade
■*
Wrath of Maura
48k Spic . < arriell
Adven.
Speclral In* niters
Ink Spec.
B n u- Byte
Arcade
1
\ adorn
48k Spee. QS
Arcade
Spec Invasion
X Ray
16k Spec Zen
Ciilily
Force
16k Spec.
Artie
Arcade
*
\ all l/i
48k Spec. Work Force
1 raditional
Spec. RUcNKfetM
1'iK spec
Artie
I raditiniial
*
Yomp
16 k Spec. Virgin
Arcade
Spec Monitor
if.k Spec.
rtcluresqne
Utility
8
/ens \%M'mbkr
4KK Spec. Sinclair
Ciilily
Spec, Scramble
16k Spec
Work I- line
Arcade
1
/iutfarat of Dread
48k Spec. Add-on
Adven,
Spec. Sound
16k Spec
M Afzal
I niiii
*
/{idiac 1
16k ZX-81 Slellar
Utility
Spectres
16k Spec
Hne,-Byle
Arcade
6
Zodtec il
Ifik ZX-NI Slellar
I lilily
Spellbiri
16k Spec
SlarU'rsoll
Education
#
Zodiac T
48k Spec sullar
I II 1111 y
Splat
48k Spec
Incentive
Arcade
1
/uekmart
I6K ZX-81 DfL
Arcade
Spunky man
16k Spec,
Abba
Arcade
7
ZXAS
if.k ZX-81 Bm K Byte
Uliliiy
Spreadsheet
48 k Spec,
Micnil
Business
7
ZX-BuK
16k ZX Kl Artie
i dim
Siar t f .i/t "-r
48 k Spec
CRL
uimiy
1
/\-( hessl
Eftk ZX-81 Arlk
traditional
Sly\
I6k Spec,
Bui; ■ Hi u
Arcade
7
ZX-t he^s II
48 k Spec Arik
Traditional
Su pcrthc^*. II
48k Spec.
CP
Traditional
8
/\ Ik Own
IK ZX-81 Artk
Traditional
Suprrcode
16 48k
ZX Compiler
16k ZX-HI Sihersofl
Utility
Spec.
CP
I lility
*
ZXDB
16k ZX-81 Bug Byle
Utility
Super Pla) 1
16k Spec
Video
Giii
•
ZX Draughts
48K Spec. CP
1 raditional
supersp*
48 k Spec
Shepherd
Adven.
5
ZXEO
16 k Spec dk' 1 runic*.
[ litily
S*afc + Voyager
16k ZX-8!
HlMlLllll
Arcade
*
ZX Konh
I6k ZX-81 vnie
Language
8
TtJ
16k ZX-81
PSS
Garni-
*
ZX Torth
48k Spec. Artk
Language
8
Tank Ha nli
t6k Spec
ilk' 1 ri'RK i
1 .HUH'
R
ZX-81 IK
Tape Breaker
16k Spec,
Sprdrasofl
(lilily
•
< lame* Pack
Ik ZXZ-S! Crystal
Games
«
tape Copier
16k Spec.
Lent
I lility
4
ZX Invasion J-'orce
16k ZX-81 Arlk
Areade
•
lasword
48 k Spec
1 ;»■> m ■.in
Business
8
ZX 81 Pocket Bi*ok
16k ZX-81 Phipps
Games
#
(a***!ir|il II
48k Spec
I usnm
Business
*)
ZX-81 Rem load -
|6k-64k
Taswide-64
16k Spec,
t mH
1 lilily
4
ZX-Sl PklureMjoe
Utility
•
Teacheraid
16k Spec
B 1 arris
Education
*
ZX Svreirikit
4K64K
Teach Data
48K Spec
B T'urris
|-.lll|L'Ll|lllll
*
/X-81 Pkturexoue
Utility
*
Teacher Daia
48 k Spec,
B rarn-
Kdui itional
8
ZX-sidcprinl
16k ZX-81 Microsphere
I tilily
*
144
SINCLAIR USER February 1984
I
Spcctmim
ttrtrtttff
^Crutn
- jfc*
'*~i
**
o
<*-*
•
r r-rj r.
3NIIAI
SPEED DUEL 48K Spectrum (Joystick compatibiej" £5.9S
Maiy have tried, put most have failed to capture the visual excitement
of i truly competitive 3D race game Speed Duel, with its choice of 3D
circuits, swinging perspective scenery, levels of difficulty and .realism of
iG movement must take the chequered flag for compelling visual
wdtement
APPLE JAM 4SK Spectrum £5.95
n* sanest game of 1 983. hilarious, compulsive and infuriating. Here are the ftutES of
fWtl E* M much jam « yOU «n Aid Si many apples aj y©U <Jrt without getting 100 fat
mnnvny you'll have a t* and jo&e one of your piiii but you haven't got many so jump in
me sauna to s»rn off out while you're in there the (jny rat will eat the jam and the apples
ycufrissancf get &g and bold and come up to bite you dead but you can jump in the lift to
go Lp and down so if your timing's right you (tin squash the rat and get on with eating to
increase your store to release rat bait to Keep the rat twiy out Cewwe the nornet zooming
past jo be avoided at all costs pyjumping into the saury otherwise n wih sting you dead ana
ft jmouiarw win come to wfc* you away
pcTfmt 44nt no MO*ty 'or spin sides Of ttroken $pectJums incurred whilst playing inn
■jamel
JUMBLY 48K Spectrum g oy stick compatible] £6.95
Awanfl new anginal an scrolling supercotour animated tuneful murtiptcture puzzle program
* puwie lor an puzzle hawr sf you' ii be amazed as picture after pinu se unfolds as reward for
w M. pawnee and luefc.
*ou * be staggered by the number of pictures shoehorned into Spectrum, but you H never
Knew »w many until Jum&Jy itself tell you and rewards your effort] with the Jurmoly Code
-Ttteiyou to enter the Jumciy Competition to design a picture for Jumtny II, due out in
198* Wmners win receive over t f 50 and have their entry and name in the new program
A* wires wik receive a prize'
TROM Spectrum 1 6K £5.95
A ccmplnrly now ij.-rr-.f fc- Spectrum featuring oounong Bytes nasty nibWes potJonous
pixels and a fearful furnace 1 Stew your brtsearcher around screen memory on a cut seart f>
ana-destroy mission that's both taxing and hManous, wrth a pace that gets more frantic wth
success
S LI C K E R Spec tru m 1 6K £6.95
Only m a month or Sundays does a puzzle program come along which is so simply and
brilliantly original as to mer« programming for four of the most popular moos
Formations of coloured triangles are mtxfd mio a kaleidoscope challenge for you to solve
Eight levels of difficulty sohr* Level Eight, join the Slicker Champtons Cud and wm FREE
software, details come with program
M AZI ACS 46K Spectrum [Joystick compatible) £6.95
HAJL THE HERO. The moH ingeniously animated Itnle fellow ever seen on a Spectrum
screen Running m aN dtt ections f igntmg, banking, tapping his feet and sitting down few a
weliearned rest
MEET THE MA2JACS. Corf«uonl DONT meet Che Maz«cs Herds of nasty spidery beetly
things with long hairy legs and lethaljaws
MANAGE THE MAZE. And what a maze — Full of Maziacs. Food. Swords, Prisoners and
an endless succession of dead end's and raise trails But don't despair — you have iocs erf fwrp
m your search for a single box of treasure buried deep in the maze of heavily defended
passage ways
NOBBLE THE NASTIES- A top Hollywood stunt man was specially flown in to stage the
nuTerous frgnt sequences needed to defeat the evil guardians of the treasure
HEAD FOR HOME, Face a return journey w«h a Purden of treasure and unaofe to carry a 1
AvjUiiHjir from i*«t«J mimi«i of BOOTS. W H SMITH. LASKt S. SPECTRUM, JQHM
menzies ma 9000 rompuiFT v?Hv.iwr itodMl thrwj^ioui the OK or timet.
50p pint and packing.
I
DK Tronics Ltd., Unit 6, Shire Hill industrial Estate,
Saffron \XValden, Essex CBT 1 3AQ.
Telephone: (0799^ 26350 (24hrs) 5 lines
STAR
SOCCER
The ACTION game with the ttirilh of real football
Choose vout team f or mar, inni hrtm 3-2-5. 4-2-4.. Oi -4 4 ^
When the game Ham u'l up to you to plan your mmffis and outwit you
0(Kpor«rii5. See she results played dim by Fast machine code routines on
a turds eye v >e* o f 1 he pi ten.
Makt the split second deejiions that the professional* have to I
Shall I make i be shot I safe passing 1 m*ybe lei [he dWIence re'group'
Or <ki I lry .i long detatiue splitting baJJ and ris-k an interception '
Has my winger qoi (he speed to take an the lull back arm b*iii httn 1
Do I try a long shot and catch the goalie off Nl line?
Or shall I give rhe ball to a leam-rtute ,n ■ HOfli
The more games ol "Star Soccer" that you play, the mote Sk 1 1 1 tu I you will become
you'll (ear n how ■□ set up the goad-scot ing oppo* lulti 1 let, and how to gel yoursel I
out of tigbl cot nets You'll Uewloo yOuf Own nyle ol play aod lind out which
laifTiftiion suns you bust
Side 1 feature! ■ SUPER LEAGUE competition
between 8 top British side*. Aberdeen. Asion V-iU. Celtic, Liverpool,
S*a<vM*Ter United!. RenoBrt^Spuni ana W«.T Ham 26 games in ail and ihe
Leaji.' I'l'd'lv mamlamod 'or you
Side 2 replay* th* WORLD CUP finals. It's a knock-out compel. don
between England, Scotland, H Ireland, Italy .West Germany. France, Bre/il
and Argentina Lcits o! encilement with sudden-death v»|rj time indrawn rjarnes
if i amazing how w rmich is packed into 16k '
Available for ZX Spectrum and ZXfil
[Please state which machine when t>r rje.r ifig I ON L Y £5-95
Wat -son Software Services LklfDept.Bi
I, Ivy Collages. Lang Road West. Dedham. Esmx, C07 6EL
Trade enquiries welcome
A world of activity for you
and your Sinclair
Whether you have a ZX8Q, ZXSl or Spectrum — we can show you
there's far more to your Sinclair than you ever thought possible.
That's the active, lively world of Sinclair User — the first magazine
written specially for everyone who owns or uses a Sinclair
computer.
Every month, there is a whole range of games, business ideas and
bright new ways to learn. There is the Sinclair User Club, with
special exclusive member offers. There are technical facts,
development news and advice, plus hints from other users and
answers to queries — in fact everything you need to be an
interested, informed and ACTIVE Sinclair user.
There's just one problem — Sinclair User sells out fast! So make
sure you don't miss your copy: order it today from your
newsagent — or complete the subscription
form below and we will „,
send it to you direct, every month. ^ — * ""^ci^
— — *-,- V A** e
to
*&?%**»*
-^^^S^ 3 *
W^S^
aJ0**.7yJor«»
?\e
e cVlS %a^ e
14b
SINCLAIR USES bebntaiy im
BEYOND Competition House, Fomdon Rood, MARKET HARBOROUGH Leicestershire LE19 9NR
SINCLAIR USER February 1984
(47
SO FAR YOU HAVE RACED FOR
YOUR UFE AGAINST ANDROID
CARS : YOU HAVE BEEN STRANDED
MILES UNDERGROUND SEARCHING
FOR DIAMONDS, YOU HAVE TAKEN
ON THE MAFIA SINGLE HANDED
AND SAVED A PLANET FROM
EXTINCTION.
r NOW IN OUR LATEST GAME
YOU ARE A BURGLAR IN SEARCH
OF LOOT — IN HOT PURSUIT ARE
THE MOST FEARFUL SECURITY
FORCE EVER ASSEMBLED!
EVEN IF YOU SURVIVE ALL THIS —
BEYOND, UES THE TERROR OF
THE ZONE! 1 .
All these games are available for ZX
Spectrum 4SK for the incredible price
of only £5.50 each including P&P VAT
etc. Just complete the maii order form
for prompt dispatch by return of post
Arcade are committed to original game
concepts so look out for new titles in the
Arcade range. TRADE ENQUIRIES
WELCOME. Phone Orpington 35639
10 a,m. - 6 p,m, or write to Arcade
Software Ltd, Technology House, 32
Chislehurst Road, Orpington, Kent
BH6 0OG.
TO:
ALL MAIL ORDERS
Qty.
ITem
lam Price
TotaJ
i
OOHT FORGET YOU CAN ALWAYS ORDER ON THE TELEPHONE
WTH YOA1R CREDIT CARD TRADC EHQViRlES WELCOME.
"I ondoaei ctMqUft/peftal Qrf*f payable !q AflCAM SOfTWMAC LTD. («
£ "Plsase dnarqe to my AcoBsa/BanHaycarel B«OUH no,
'Pimm dfttote/compieia a»apc*esMe
Signature:
Name: Mr/Mre.'Wfsa
Mcfc*M
ZJC81 SPECTRUM DRAGON.
BBC AND VIC
SOFTWARE LENDING
LIBRARY
WtflWlwIl* ">!■*- tl^ff. Mlp ' ,n. jHJilipiQ^IJfTWlRi
fi^ui ampul*
("a lilr m^raaantaQ I1u* rrun itw <:i j*r • "
^»i». rnnfl, m lit* SOFTWARE LFNDINC
j IfiRAH Y iiuilij^ivhp kil. faljfionjjf I
S*nd Cftaoju* w PO *P* ** to:
SOFTWARE LEPtOWG LWHAflY
PO floi 3 Cna-Be-ford. W«*l Vorki.
5l*Bnt) nam*. vUm ind
computer type
SPECTRUM - ZX-81
Overtwalfttg? IMoisy? Keyboard runs
hot? Pirobbem solved wiih the P. R.
Adaptor No soldenritj . no dlirridfll
Img, rust plu-gs in place £8.9&p.
With pciwer r^ws! button lor instant
system reset. £10. 95p ZX power
iupph' repair service £5 95 t(K PS I :
Cheques. PO to:
P. Ft, ELECTRONICS. SU2,
14 Brtftbo Close, Doncaster,
S YonH DM 6EL
Available ova the counter from:
Modem blssctTonkc*. Market Road.
Dancaster ERC — Soft. Helnntli
strasie 93. 4000 DuSseldorl 1
SPECTRUM BEPAIft SERVICE
VERY FAST
awn hi ■■ -j
ier:^ ,•_.■> I'i, \ 'A.
liuanl inlarprtwt Ltd.
17 undan Ho«*a.
CoitwTWfi Rood.
Hough,
iitt
a Ptvme Souof (OJSJj Was Monatr, Iti
ifrmdoy Only Si? 60 * fVjrti rjwl Po*»og»
yve o*6e ^ec*3"' crt Commprjore £yaiBm&
THISLL
TEACH YOU
A LESSON!!
(...or two)
EU LEV*L-C5I runfwrriiirrriftfl
* C*-^#» BTlWkfl.47"
_ ..;.■: KJ j'- ji *a.-a.<p..- »
AaWah-pw, Pari- Lando- IV* I H *
ZX- SPECTRUM 48 K
2 HEW FAMILY GAMES
For Z m b pJiyeis of *U 44**
QUIZ CHtOUntS: genera knowledge
gunfl, uniEikcrLve between piayera. ions
of drill aj»d Chinee involved iS.SO
WnVHER TJUtE ALL: gntvertl knew!
■dxn) ganne, me rot tun Of A vTambia.
K5.S0.
Faeiliry av«Lifc]i! to craate new dTieau&fl
banks Question bunks alio available (or
all aoir g/roujii SAE tor dJsiula
JEMEI. SOFT
3* Witmch Rami, Walion
Peteiborouah. PE3 6DA
LEARN ABOU1 I I.K MONKS
WITH YOUR SPLCTRLIM4SK
MP* VtlUtliired Frfrp«¥>nr bp*Tnriin imi>i.4u
brpniw. ih'hiKi^il Iff diLliDfiKft rnHmem —
mr liidr*
p I 4tf»H>u1ri" arwr abed *r**p*1rd pvprui*
p [mnm au*df-
• ' - >l convnnmti'
■ MrachKal tfijidvH.r and AM
f itkip «j|!ri*r I!' h^n™-,. < ,i I -1 HI I ft(. rti
HlcwrnlMV *«r*ne™1n* lir r^irii t'rliptlj'^
4 ^p p*P t:** "*•* rH ' ''■■ N
f r.i-T., 1 1 r I in^iaanuti KqkI
K«k^iii> KM 'i H'
Th* rale 1m ctaiiilied
ad'tertisinnj in the
■& ofily C-9.00 pn
sinojn cohjmn r;nnlimetrif
HORSE RACING
lhn grsal pri^riMWM OlWly**! o" 1h«
SfHL'iiuA itntii.ee
SfMChum ItK tl? 00
»» If- tK XI
£1)1 ItlHtW
FOOTBALL
Ai' ul'Oi-nij pj-rrjpjnmiFip wtiwh avihl pttk rh*
tnalEtin tidiI hk»r> •■ b# "J*--a , r !>■ r>fjrn»
vuii nrnJ l k Ml ulrDTFrt-.
Spulrurti 4EW EI3«
zx ai pak ts2.ro
^»r.r1 r-hpt|>ja ai P Q Kj
tf>* Mulranlu Co., P*n|i'!iL*. HOu-lat
dmIoc-i. Fqlmgurti Cornwall TR11 UD
ARE YOU A RAILWAY
ENTHUSIAST AND OWN
A 4BK SPECTRUM
II m> Uniatrull a a nvuil tor you.
thli gonw h*:n imw DCK* Hi rhs doyi ot
iMTt wtw™ jou' obj»ciNa H ho ih raw I OM
locomahw* H^Vjkr travelling fw^vMaao 17B j1o-
i^ai an Ih* Wnlarn D«gian. ~clw4insi <kM*d
and 4nrann«n brancK Unit $pel »ngM»« rang
aig Irom nh» o>tmidia *! ma» ortd C nilla* ft&wn r&
tha Hu»pW» Tan*'"
ITI nil 1.1 WMIrdll.
HOW ALIO AVAILABLE. JWianll fl**» I ICn)
•nginvn N? Ir- lfti*iJ bah*a*r. I7t RFiHjIanrf
ragiori ov^Hnalianfi. kncnmaliwi nKludj* CfKO-
nijfiCHYi Scars. Jubil««i art,
Send ihaquat V foilnl Ordan tor L4.*s
UHHidwvg p4p *<* aoch gamm an
DEE-KAY SYSTEMS
li OaMwd fin"i wnojmow souih
Haddlldt. Warn 9W 7UN
SPECTRUM TEACHER
DATA
I nebm" UW veut nKers. Irl It da. the
u.nrk Pui ynur flmxK kti end rnaik* an
rHMMtir Ll botIi. rjuilu, ^ahi. prlnti
liib. ir/aphi fjucsKi art cikukned If
v«<i n«d Itwm "Gold S**. -'. i-:-
'IRS
ES.a) |1HK) Brum l-arrn, 8 nhomp
Km Rua-J . Brjlu-i 6< HiPF
DISCOUNT SOFTWARE
13
ia
:j : ■ fc ',.■.■ I
• 14
IB
SPECTRUM SURGERY
Elctlriiiil repfiirs rapidly i>
[Nr'itsL- send E1S.50 ■(fuJiy itidjsive)
wilh description of fault in:
MELMARK MICROSYSTEMS
X KirjKsfifld Road, Dace End.
Neat Ware, Herts SGI a 0LY.
FREE
ZX-81 SAVE/LOAD
PROBLEMS
Van sungdy wrid □ iarrf>l«i
uungi /chji compiiiW FoQkt
reima at your '
yuiji ctraiotaoy f*tV*tri Of t&
Ihn ::i.j'o la >■-
□no lac^rdM
u will fftCftiv*
or«Urrfl,*ouor
ME A C D*tigni. - O FJOJ li'j.
S A E Wrth ariv <rjr*QiJir»iai
DISCOVER
SINCLAIR GRAPHICS
Have you aytfliown campKiar d>Hnad
OEaphjCS Of anvied profaawnnal aaBwaie''
Kate'E ail you n«d ia anler ItiH wuitd of
hgti ruaQluuon i^iapluca. Tne Data D id i a
Pad is «rar,ih papei made entuslr tar tout
SLiicLdji 40 leavei 0! M dangn ihaata
showing; twill "ChiiMler act" and 'Put-
eis" >i|ow acrunle uifotmlikjll tniutof
There's r«jm fcaT nolH teo
lT ! SIJUrT
Simply dj*w youi dtBiflr. on tu a Data
Dwip Tin it and kay Ji uaruig "Print At"
auiementi lead rUrseUT rrom th* iha«t
MATCEt THESE FMCESf
A Dat* Daaiora Pad ccai ruW tl 94 — two
far IB. 25 grj !luee fan ill SS ip*p Btc-f
Have VOU 3^etl tȣr-rfiT v^tua ? fu*1 fiJ Ln 1he
COiLpori b^lorw encloauso a Checjue ■' t* Q
and ctite how many padn you raquire
T.K.T. DESIGN
US NlGKtTTMjAlf UNE
LONDOHSWIiasrj
1 ware lo create tugh-reaoilution graphic*. 1
FUaaa aand ma Da la Design P*d(f) I
nnw t r-ncLoae a Qftequa/P.O. for E '
[pip included)
NAME
ADDRESS
TO WW
COUNTT . .,
P CODE
B.l
AJTOSEW3TO
TUT. DESIGN
13d NIGHTINGALE LANE
CLAPHAM
IjOHDONSWIE BSU
To advUrlisu in iha
Sinclair Superman, call
Annette on (01> 359 3525 NO Wl
TEJ
«\CH YOUR <=:■-■■■_■=»
ZX Spectrum 16 or 48K
JEL
lAH ptogwns J'rrc/uda **iHtNJ»;ri Ofarifp/
ra
1
HIDDEN LETTERS Aae b on (6.00
RaadirkQ cuTipiPhcrisiart end stalling fjama
*H
MOfrEV .1 levels Aga3-10 te 50
TELLING THE TIME Aae 3 <0 f T 00
$ Lrvr:li, rjtooll far tluld to HI
LEARNIFV1Q TO READ 1 Aga 2-6 f 6 BO
4 AH graphics pre reading games
POPPY
' 1 aim As%;ii.i*i *irt Mambw
1JUR USER ftfrrtWTT 1984
149
MEMOTECH CENTRONICS l.'F with con
eatta. unwarned gifi. £25. Alia,
McodC-r li compiler program, hardly used,
£5. All tot ZX-81 Tsi doYlime 07$ 2
89221 Evenings »r*d weekends 07B1
036992
to* OFF ail Spectrum. ZX-fll Tapes. Send
Nil gf required tapes plus advertised pricr
raid 10% Mostly by rwtim Curtiplere in 2t
day*. 51E. price list, tissu 76 Churches.
Larthall. tariaitshire.
PRE SCHOOL. EAALV SCHOOL CASSETTE
iLi't^t-'t SCnocI rvrjmfl. 7 Educatrurial/Stimu
lating program i lor Children 4 44 years'
Written by teachers, !6'4BIC Spectrum. EH
cheque.'PO 10 Finn Sot! ware Qept 1. 16
Huntsman* Drive. Upminsipr. Esskh
ECruCATlONAl SOFTWARE IB* Spec-
trum. Teach> your children ' lablas". Menu
driven, 4 upriurtt, IS levels, listings, rtft-
dem questions. Full colour, graphics arid
sound f 4 W r#prv*c Er*fl»n«*rincj, 17 King
fuhei Gardens. Selsdon. South Croydon
CRZ BOY-
WANTED iX SI or SpeotrUin wd hard-
Airg. Slats fullcs-t particulars. Must be very
inasunahry priced.
4SK SPECTRUM plus tape recorder and
assorted games tepes- Still under guaran-
tee, bargain al £100 Tei Reading 107341
4778-16.
SPECTRUM OWNERS' Our Software Club
has hundreds <>t gam^s and utilities with no
rental Chaigesl For more information send]
SOp PfliP to' Spectrum Cette, Windatmers,
ChcrTywO&d Road, Loughhnstown. County
Duplin, Ireland
MUSIC PROCESSOR program Failures 20
different notes, any lengih tun*„ moving
piano keyboard. aHer beat., plnyhetk, \ I
out, memory, rewnte, I6V4SK Spectrum,
C 3. SO from A Bowyer. 5 Rock Lene. Wer
minster. Wilis.
Ai'D CONVERTER. Tumi 1 S,'4qK Spectrum
into audio oscilloscope, date capture de
DeH, -Bill 40,000 mailings-sec urid wrtli
stable operation Includes mach-code cas-
a«riB lead}, mslfuelipns. (3$. C Murfm 28
Heaoe Road, Ripley, Derbys DES 3GE
2X-B1 MEMOTECH 1 6K RAM. Filesi.'*
keyboard: power supply: leads, manual;
E40 worm quality software, £20 worth
books; E50o.n,o, 54 Mein Street. Stonmill.
Mr, Walsall WS9 9DX. Ptiufla: BrownhiHs
4478
PROGRAMS REQUIRE Q 1 C 48K Spectrum'
new and; original Applications invited Frgm
vourvg enthusiastic proo-iammer* 50%
shares Send proflrom lists, tope* nnd
notes, age and Full personal details to "CHI-
BUR' 1 No. 3. Lonsdale Street, Leicester LE2
IBP.
1B.'4BK 'CHARACTER. DESIGNER'. Cwta
own GRAPWCS-suporb colour, SAVEingj,
LDADuiy option, t&.6a iPiP) 'MUSlCAS-
SETTE' - enjoy MOZART- Sonata K 545.
BACH* Air on G-Siriny - £4.60^4^1 and
NOTES -CWflUR. 3 Lcndsdale Street,
theater LE2 IBP INCLUDE 11.
t-UI fangs n1 prop*-™ Inr [ha SPECTRUM ann £X HI from INFANT -c <3CF Mm- in, it
SAF i a - 4- h'ji Ldialogue and Specia- CHlerj
llfpumiL pmvE. ntPMUHSE. ESSEX IG* sen t,i pi ssossts
Two beauties from Peekay.
(Cheque* payable in PEEKAY SOFTWARE)
Titk here
64x32 SCKhhN
THE AMAZING MAZE |
Name ,.,
AddFess.
CW.O. to:
PEEK A V SOFTWAkl
38 BE R TON CLOSE
HI LrNSDON. SWINDON,
WILTS SN24BE
Reach an estimated readership of over 200.000 users
per month for as little as £2.00*.
Or if you are starting vow r own amall business advertise in The superman
lor only CO- 00.
Yes all van have [O do is HH in Ihe coupon below mclutfi-ng yolk name,
address and of telephone number and send [o: Superman, Sinclair User.
ECC Publications. 196-200 Balls Pond Road, London Ml 4AG.
Maximum 30 words,
Your advert will appear in the earliest possible edition.
,
Name
Addtess
Tel:
Have you IfterudstJ Ihe fee of C2. 00 or £ 10.00?
•tor second hand sales only
l-n iii -m I ni ^r -wi i-i bi "it "ij-r Hi .riir >■«■»" uii|-. ■■ + *tiK»Ji |I L I | y wij «u
1 *i ■ ■ ill ii iiili r ii l I l i ' ' l.i WW* a* i."Wr ^naiu ilu iitfWu'T^ *dv^iiw"m.l M*v&
UTMhutainpndii" l%l.i.|.»i|i.,».ii.,iMl^i.H-^
, 'V fyim'l 'II I J«Ull
'^lii " i -*in«in i***!*** ^^ Hw «a«i 1^ ■ *■%-**(*»■ «
(WFllin ^Pliriw'V*'. '^1 ■ -rl I- ^..l.rrl . -* I h» W I ,l?l*tM"»
L
Advertisement Index
Addictive Games 66
AOE HardwflfB 46, 47
Arcade. ,, . ,.14d
Ariic ,. . ,.. , 1 40
Aui uiiiai a 54 . 6 5
Belrfkuver,,,,,., ,,. ...as
rieiasofi 68
Bayynd SAW (47
Bio Brother PubHshina 8'
B oi R El&ti Ptoducts &2
Brwiojemaster T
Bridge Sof i A-arB 100
Surfer Mirirn Shop 7
Bo,g Byte 88
CCS 20. 123
CP Snltware 56, 57
CRL..,,. ,. ,...22.23
CanVtuidge Camputing Store 146
Campbell Sy^t^ms ...110
Cametl Softwara .14. 15
Cascade Games .133
CpmpueQunrJ 48
Cross Soft ware.,,,,., B9
Crysuil Cumputiria 2S
OK Tronic* 35. »&1. 14B
Oean Electronics 1J4
Digital tntaigiaiion Si
Doric Compufei Service* 1Q2
East London Robotics 42, 43
Gilaolt 28
H & K Supplies BO
Hardend Software 67
Heslacrosl.. 48
Hewson Consultant 113, 115
Hornby Software 68
Imagine SuMwarn 24, G6, 124
Incentive Soflware ., ,.. 7
Interiece 10
Helwooo Computer Cases , ..13*
K.ampalon Micro 2
KsrOriw Sotinvaia Services 134
K nsnioi fle
Ljthtcinen S7, 89
MU a Modon ... 110
lilaltuneiM) House ,.,...,.,,..,93-97
Mi i::rotivl*r B6
Micro Mania.,.. 126
Mltroryiefla 121,
Miconat , 136,
Microsphere
MlkroGen
Mirroreolt
McAIIbyBS
National Sofiwaie Library
New Generation
Ocean Software 3$
Qrwirt $pltware
Oxford Computer Publishers
PSS
P«kav System*
Ptinl and Rotter .118,
Prrj MiC'O
Protek. Computing
ui l Lairva 81.
H ELtii
Rabbit Software
Richard Shepherd Sorrwara 3D. 31
16/48 Megefine ,
&MT
S^lec Saltware
Severn Software
Shards Software
SignpOinl
Silvefsott ..,
Solteach
Software Supermartel
Software Workshop 108. 130
TV Tuba*
Tandy
Tasman Software ..
Taxoaie
Trenvfpmrr
Tiaatarj Osiiona
IJniyerjrfy Software
Varalco ...............
Vortax
Vultaii Elecironics
?X Micrplair
123
\3S
..40
. 16
60
..67
126
.37
, 39
122
125
161
1W
117
10
.13
)h3
100
114
132
137
..?
36
48
111
..3fl
.21
.61
,,25
131
..66
62
133
62
14B
67
10
36
...4
67
8, B
Busmmss Section
Hilderoay t
Kemp ltd
McNeil Software II
Picturesque IV
I5&
SINCIJV1R USER February 1SS4
SPECTRUM
igrams
_ ■ v
KX
Blade
Alter.
Six different
screens of
incredible 3L
arcade action
featuring: xx/
Saucers,
Asteroids,
Tie Fighters,
Space \A
Hoppets,
Banking
Spaceships
moving 3r
scenery;
CURRA1-
SPEECH
compatible.
Swooping
low into the
defensive
trench, yr"
nudge
L/our g*
sights ont
the alien
craftO<
hurtling
toward
/OU.o
NEW K x
RELEASE
"T
PSS SOFTWARE
FOR INSTANT CREDIT CARD SALES TEL (0203)667556, SEND CHEQUE OR PO.
TO RS.S.4S2 STONE Y STANTON RD. COVENTRY C\tt 5DG.
TRADE ENQUIRIES CONTACT JOHN FLETCHER, COVENTRY (0203) 81346
...THE YEAR OF THE GAME LORDS.
Live Music
Archive
Librivox
Free Audio
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Cleveland
Museum of Art
Internet
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